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# A certain company that sells only cars and trucks reported that revenu

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A certain company that sells only cars and trucks reported that revenu  [#permalink]

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21 Jul 2010, 16:59
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A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996 ?

(A) 1:2
(B) 4:5
(C) 1:1
(D) 3:2
(E) 5:3

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A certain company that sells only cars and trucks reported that revenu  [#permalink]

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12 Mar 2014, 00:04
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SOLUTION

A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996 ?

(A) 1:2
(B) 4:5
(C) 1:1
(D) 3:2
(E) 5:3

Let the revenue from cars in 1996 be $$c$$ and revenue from trucks in 1996 be $$t$$.

Total revenue in 1997 would be $$0.89c+1.07t$$.
Also as total revenue in 1997 were up 1 percent from 1996, then total revenue in 1997 would be $$1.01(c+t)$$.

Equate above two: $$0.89c+1.07t=1.01(c+t)$$ --> $$\frac{c}{t}=\frac{1}{2}$$.

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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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17 Aug 2010, 08:30
3
Well, I cannot say its exactly a short method, but looking at the options one can surmise the ans.
Take 100 as base figure. Now try the options.
You can say that "The drop produced by less revenue by Car sales" MUST BE Surpassed by" The gain from Truck Sales". to achieve the Net Gain Effect.
i.e the proportion of Truck Revenue has to be greater than Car Revenue.

By this you can directly eliminate C,D and E. Now for remaining options,
Say we start from B. Then 4:5 will mean :
Rev 400 for cars and Rev 500 for Trucks
Calculate 11% @ 400 and 7% @500. We just have to ensure that
7% @ Trucks MUST BE > 11% @ Cars. Right !!!
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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06 Jan 2013, 11:21
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1
Drik wrote:
A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in1996?
[*]1:2
[*]4:5
[*]1:1
[*]3:2
[*]5:3

Its 1/2
Consider the revenue from cars in 1996 x, which reduced to 0.89x in 1997.

Consider the revenue from trucks in 1996 y, which rose to 1.07y in 1997.

Another piece of information that is given is that the total revenue which was (x+y) in 1996, rose to 1.01(x+y) in 1997.
We are required to find x/y.

So using these information, we get $$0.89x +1.07y=1.01x +1.01y$$.
On solving we get x/y as 1/2.
+1A
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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02 Jan 2014, 23:22
1
jpr200012 wrote:
A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996?

(A) 1:2
(B) 4:5
(C) 1:1
(D) 3:2
(E) 5:3

Let us say that the revenues from selling cars was $100x and from trucks was$100y in 1996, total revenue: 100x + 100y

Revenue in 1997:
cars: $89x trucks:$ 107y total revenue: 89x + 107y = 101x + 101y

Solving the above total revenue equation we get: 12x = 6y i.e. x/y = 1/2

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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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12 Mar 2014, 19:43
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Answer = (A) 1:2

Please refer chart below:
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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12 Mar 2014, 20:15
1
The company sells only cars and trucks.
Let c = revenue from car sales in 1996
Let t = revenue from truck sales in 1996
Equating the total revenue in 1997 with the individual revenue from selling cars and trucks in 1997,
c(0.89) + t(1.07) = (c+t) (1.01)
Dividing throughout by t,
(c/t) (0.89) + 1.07 = (c/t + 1) (1.01)
=> (c/t) (0.12) = 0.06
=> (c/t) = 1/2

Option (A).
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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12 Mar 2014, 23:07
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getzgetzu wrote:
A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996?

A. 1 : 2
B. 4 : 5
C. 1 : 1
D. 3 : 2
E. 5 : 3

This is a weighted average question. Average of -11% and +7% is +1%.
Using w1/w2 = (A2 - Aavg)/(Aavg - A1),
we get w1/w2 = (7 - 1)/(1- (-11)) = 6/12
Revenue from Car:Revenue from Trucks = 1:2

For explanation of the formula and other details, go to:
http://www.veritasprep.com/blog/2011/03 ... -averages/
http://www.veritasprep.com/blog/2011/04 ... ge-brutes/

For another discussion on the same question, check: a-certain-company-that-sells-only-cars-and-trucks-reported-73058.html#p541483
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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15 Mar 2014, 20:49
1
This is how my brain processed this one,

Step 1 --> Set up the equations.

In 1996: R = C+T
In 1997: 1.01R = .89C+1.07T

Remember we are looking for C/T.

Step 2 --> Substitute

1.01(C+T) = .89C+1.07T or,
1.01C + 1.01T = .89C+1.07T

Step 3 --> Solve

.12C = .06T
.12C/T = .06
C/T = .06/.12
C/T = 1/2 or 1:2

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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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20 May 2014, 13:26
3
1
Car-------------------------------Truck
(-11%)-----------------------------(+7%)
-------------------------(+1%)-------- (Wtd Avg)
--------(12%)------------/----(6%)--
Thus ratio of Car Sales/Truck Sales = 6/12= 1/2

FWIW, this is one of the fastest and easiest way to solve such problems
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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08 Aug 2014, 07:50
2
2
Straight forward weighted average approach
Car Total Truck
-11------ 1------ 7
-----12------6----
So Car/ Truck = 6/12 = 1:2
Ans: A
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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08 Apr 2017, 02:14
2
This problem can be solved in less than one minutes by drawing a graph.
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File comment: This problem can be solved in less than one minute by drawing a graph.

Revenue.JPG [ 115.44 KiB | Viewed 6847 times ]

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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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10 Aug 2017, 10:37
1
1
jpr200012 wrote:
A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996?

(A) 1:2
(B) 4:5
(C) 1:1
(D) 3:2
(E) 5:3

We can let the revenue from car sales in 1996 = c and the revenue from truck sales in 1996 = t.

Since revenue from car sales in 1997 was down 11 percent from 1996, revenue from truck sales in 1997 was up 7 percent from 1996, and total revenue from car and trucks sales in 1997 was up 1 percent from 1996, we can create the following equation:

0.89c + 1.07t = 1.01(c + t)

89c + 107t = 101(c + t)

89c + 107t = 101c + 101t

6t = 12c

t = 2c

1/2 = c/t

Thus, the ratio of revenue of car sales to truck sales in 1996 is 1 : 2.

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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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07 Dec 2017, 18:11
3
Here is an easy solution
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Re: A certain company that sells only cars and trucks reported that revenu  [#permalink]

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03 Dec 2018, 20:43
Hi All,

We're told that a certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and trucks sales in 1997 were up 1 percent from 1996, what is the RATIO of revenue from CAR sales in 1996 to revenue from TRUCK sales in 1996?

This prompt does NOT give us any information about the actual revenues for car sales or truck sales in 1996, so we'll end up using a mix of TESTing VALUES and TESTing THE ANSWERS in a moment. Based on the information in the prompt, if those two revenue values from 1996 were EQUAL though, then we can run a quick calculation on what the results would have been in 1997.

IF in 1996....
Car revenue = $100 Truck Revenue =$100
Total Revenue = $200 then the revenue in 1997 would have been... Car revenue = 11% drop =$89
Truck Revenue = 7% gain = $107 Total revenue =$196

This is a 2% DROP from the year before, but the prompt states that it's supposed to be a 1% GAIN. To 'offset' the 11% drop in car revenue, we clearly need there to be a LARGER amount of Truck revenue. So the ratio of car revenue to truck revenue must be SMALLER than 1:1 (e.g. 1:2, 2:3, 2:5 4:7, etc.). Thus, the correct answer is either A or B.

Let's TEST Answer A:

IF in 1996....
Car revenue = $100 Truck Revenue =$200
Total Revenue = $300 then the revenue in 1997 would have been... Car revenue = 11% drop =$89
Truck Revenue = 7% gain = $214 Total revenue =$303

This is a 1% gain from the year before - and this matches what we were told, so this MUST be the answer.

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Re: A certain company that sells only cars and trucks reported that revenu   [#permalink] 03 Dec 2018, 20:43
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