Question

If the cost of $18$ mangoes is the same as the selling price of $16$ mangoes. Find the gain percent.

Answer 1

$18CP=16SP$

$2CP=16(SP-CP)$

$\frac{SP-CP}{CP}=\frac{1}{8}$

so Gain percent is $\frac{1}{8}\times 100=12.5$