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word translation

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Senior Manager
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07 Sep 2011, 11:50
1
1
Please check the bold statements and comment, whether the translations are correct. i'm really having problem in translating such question .

In certain population, there are 3 times as many people aged as 21 or under as there are people over 21. The ration of those 21 or under to the total population is

Let # of people 21 or under = x
then 3 of people 21 or over = 3x

21 or under / total = x / 4x = 1/4

At a certain college there are twice as many english majors as history majors and three times as many english majors as mathematics majors. What is the ratio of the number of history majors to the number of mathematics majors?

E = 2H
E= 3M

2H = 3M
H/m = 3/2

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07 Sep 2011, 12:42
4
1
U got 1 right and 1 wrong.

You have 3 times(thrice) as much money as I have => you have 3x money if i have x
If you see "there are twice as many X as Y", then this means the number of X is twice the number of Y.

Thus, in statement 1
3 times as many people aged as 21 or under (lets say Under) as there are people over 21(lets say Over)
=> Under = 3 X Over
(U can pick nos, if over 21 is 2 ppl, at or under 21 must be 3 times and so 6 ppl)

In statement 2
twice as many english majors as history majors
=> E = 2H
(if there are 3 history majors, there will be twice i.e. 6 english majors and hence E=2H)

& three times as many english majors as mathematics majors
=> E=3M
(if there are 2 maths majors, there will be thrice i.e 6 english majors and hence E=3M)

Hope it helped!
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Senior Manager
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08 Sep 2011, 08:16
shilpiruchi wrote:
:) U got 1 right and 1 wrong.

You have 3 times(thrice) as much money as I have => you have 3x money if i have x
If you see "there are twice as many X as Y", then this means the number of X is twice the number of Y.

Hope it helped!

let me try one more time

twice as many X as Y => y = 2x
Three times 21 under as 21 over => Over = 3under

Twice as Many english as history => H=2E ( which is wrong)
three times as many english as maths => M=3E ( which is wrong )

what i'm trying to do is, whatever comes after "as" i put that on the left side of the equation. like the bold words.
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08 Sep 2011, 10:21
1
let me try one more time
Conceptually X should be a bigger number. So sure if Y is 'a', X will be '2a'.
Hence, you can write '2a' = 2 times 'a' OR X = 2 times Y

When you put an equation y=2x, you make x smaller as now x becomes 1/2 of y

twice as many X as Y => y = 2x

y = 2x would imply that if we have x as 2, y will be 2x=4

Three times 21 under as 21 over => Over = 3under
Similarly, here it should be under=3over (for each over you have 3 times under)

Twice as Many english as history => H=2E ( which is wrong)
E=2H (twice the number of english majors as compared to history majors

three times as many english as maths => M=3E ( which is wrong )
E = 3M

what i'm trying to do is, whatever comes after "as" i put that on the left side of the equation. like the bold words.[/quote]
Try to do the opp. Put whatever comes after "as" on the right right side
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08 Sep 2011, 11:28
i got it now.. Right side . Thanks alot
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17 Jul 2018, 08:02
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Re: word translation &nbs [#permalink] 17 Jul 2018, 08:02
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