If 2/9 of a number is 36, then the number is

A) 162 (B)8 (C)324 (D)648

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- Sep 26th 2012, 04:58 AMSpixol123Fractions
If 2/9 of a number is 36, then the number is

A) 162 (B)8 (C)324 (D)648 - Sep 26th 2012, 05:12 AMjohnsomeoneRe: Fractions
The proper way to do this is to set up an equation for the number you're trying to find. Any thoughts on what that equation might be?

- Sep 26th 2012, 05:27 AMSpixol123Re: Fractions
iv worked this one out. 162/36 dived by 2 = 81/18 divided by 9 = 9/2 thanks mate :)

- Sep 26th 2012, 06:15 AMHallsofIvyRe: Fractions
Yes, that's right- though this is a strange way of putting it! It took me a moment to realize that you were using "/" as a 'separator', not meaning division. You are saying, "The answer is 162. 36 divided by 2 = 18." (not "81"- that was a typo). But now I am confused. You say "18 divided by 9 is 2." And therefore ???? Where did "162" come from.

In fact, the problem is "2/ 9 of a number is 36". That is, if you multiply a number by 2 and then divide by 9, you get 36. Okay, to go**back**to the number work**back**wards! Instead of multiplying by 2, divide by 2: 36 divided by 2 is 18, just as you say. Instead of dividing by 9,**multiply**by 9: 18**times**9 is 162. - Sep 26th 2012, 06:50 AMrudsdieyRe: Fractions
Hi Spixol,

i would suggest you to put an equation (as per john advised) rather than try one by one.

let substitute the number as x, then;

2/9 of x = 36

or

2/9 * x = 36

x = 36*9/2

x= 162

cheers...