Question

A's income is 20% less than that of B. By what per cent is B's income more than A's​

Answer 1

Answer:

let Bs income be rs100

so As income is rs80

Bs income is 20% more than As income

Answer 2

$let \: the \: income \: of \: b \: = 100\\ \: let \: the \: income \: of \:a = 100 - 20 \\ = 80 \\ more \: income \: by \: b \: from \: a \: = 100 - 80 \\ = 20 \\ percentage \: of \: more \: income \: \\ = \frac{20}{80} \times 100 \\ = 25\%$

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