Question

if the age of A is 25%less than that of B, boys age is _% more than that of A.​

Answer 1

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Let A represent A's income and B represent B's income. Then it says A = B x (1-25%)

So let's rewrite the percent in decimal and solve for B:

A = B x (1-0.25)

A = B x 0.75

A / 0.75 = B

A x 1/0.75=B

A x 1.3333 = B

A x (1 + 0.3333) = B

A x (1 +33.33%) = B

Therefore, the answer is that B's income is 33.33% more than A's.