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-   -   How to find A:B ? (http://mymathforum.com/elementary-math/344513-how-find-b.html)

Ganesh Ujwal July 4th, 2018 11:35 PM

How to find A:B ?
 
A's age is 9.09% less than B's age.

How to find A:B from this above condition? Answer is 10/11

I tried:

9.09% = 1/11

B-A=1/11, so,

B=1/11+A,

=>

A/B = A/(1/11+A),

or

A/B=(B-1/11)/B,

or

A/B = (B-1/11)/(1/11+A).

weirddave July 5th, 2018 12:16 AM

If B's age is 100%, A's age is 9.09% less than B, so A's age is 90.91%
90.91:100 is close to 10:11


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