Question

A's income is 20% less than that of B's. How much percent is B's income more than A's?

Answer 1

twenty percent is B's income more than A's

Answer 2

$\circ\circ\circ\circ\underline{\fbox{\fbox{\fbox{\fbox{\fbox{\Large{\underline{\textbf{SOLUTION}}}}}}}}}\circ\circ\circ\circ$

$Let\:the\:income\:of\:B's\:is\:=100\\\\Then\:income\:of\:A's\:is=80\\\\As\:income\:of\:A's\:is\:20\%\:less\:than\:B's.\\\\So,\\\\Percent\:by\:which\:income\:of\:B's\:is\:more\:than\:A's=\\\\\frac{(B-A)}{A}\times100\\\\According\:to\:the\:question,\\\\\implies \frac{(100-80)}{80}\times100\\\\=\frac{20}{80}\times100\\\\=25\%\\\\\boxed{Hence,\:25\%\:is\:B's\:income\:is\:more\:than\:A's\:income.}$