Question

A shopkeeper decreased the price of the red caps from rs.20 to rs.16 as the sale of the red cap was low. but the demand for the green cap was rising, and hence he increased its rice from rs.16 to rs.20. Determine which % is greater, the % of increase or the % of decrease?

Answer 1

Red caps   : $\frac{16}{20}$
Green caps: $\frac{20}{16}$
$\frac{16}{20}100=20$%
$\frac{20}{16}100=125$%

Therefore increase is greater.