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# fraction

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VP
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07 Feb 2009, 05:27
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Pls explain ur answers
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Manager
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07 Feb 2009, 07:55
May
Lee's Income=L
Lee's Family income=LF
Also,
L=.6LF--- (1)

June
Lee's Income=1.2L
Lee's Family income=LF

We want to find
(1.2L/LF)*100===?
From (1),
LF=5L/3

Hence (1.2L/LF)*100=(1.2L/5L/3)*100=(3.6/5)*100=72%
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VP
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07 Feb 2009, 08:42
I also calculated answer as 72% but its not the OA

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07 Feb 2009, 11:19
ritula wrote:
I also calculated answer as 72% but its not the OA

let the total income in may for Lees be 100.
Mrs income is 60.
Rest of Lees make 40.
In june, Mrs makes 72. Rest of the family stays at 40.
So,
72/(72+40)=72/112=18/28 = 9/14 = .64
Hence, A.
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tusharvk

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07 Feb 2009, 11:59
Let be Mrs L income in MAY be x. It is given this is 60% of TI(Total income)

==> x = 60% of TI

In June she earned 20 % more than in may ie her income in June will be X+ 20% x = 120% x

Now 120% X will be 120 % of 60 % of TI = $$120 / 100 * 60 /100 * TI$$ = 72 % of TI

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07 Feb 2009, 14:46
Let's pick numbers. Mr. Lee earns $60, and the income of his family is$ 100. If he gets 20% more, he gets $72, and Lee's family total income would be$ 112.
So, 72 / 112 = aprox. 64%. A is the correct answer

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07 Feb 2009, 16:02
Oops.....that is true. Answer might be A.

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07 Feb 2009, 22:43
%= 72/72+40 = 9/(5+9)=9/14 = 64.28%

A
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07 Feb 2009, 23:14
ritula wrote:
Pls explain ur answers

$$It should be A.$$

$$= \frac{1.2 (0.6x)}{1.2(0.6x)+0.4x}$$

$$= approx........... 64%$$
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08 Feb 2009, 10:34
OA is A.
Thanks 2 all

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08 Feb 2009, 13:32
x2suresh wrote:
%= 72/72+40 = 9/(5+9)=9/14 = 64.28%

A

Suresh

how did you get the last two decimals? I was only able to do 64 without calculator.
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tusharvk

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08 Feb 2009, 15:22
tusharvk wrote:
x2suresh wrote:
%= 72/72+40 = 9/(5+9)=9/14 = 64.28%

A

Suresh

how did you get the last two decimals? I was only able to do 64 without calculator.

try again???? you will get the fractional part too..
though it is not necessary find fractional part for this question..
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08 Feb 2009, 20:12
tusharvk wrote:
x2suresh wrote:
%= 72/72+40 = 9/(5+9)=9/14 = 64.28%

A

Suresh

how did you get the last two decimals? I was only able to do 64 without calculator.

Precisely, it is 64.29%.

=0.72/1.12
= 9/14
= 64.29%
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Re: fraction   [#permalink] 08 Feb 2009, 20:12
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# fraction

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