Question

By what per cent is B's income less than that of A, if A's income is 30% more than that of B?

Answer 1

Let the B’s income be$=Rs100$.

Then, A’s income be $=100+30=Rs130$

Now,

If A’s income is $130$, then B’s income is less by $30$.

If A’s income is $1$, then A’s income $=\frac{30}{130}$

If A’s income is $130$, then B’s income

$=\frac{30}{130}\times 100$

$=\frac{300}{13}=23.076\%$

Hence, this is the answer.