Question

By selling coconuts at the rate of rs. 6/- each, a trader gained 20%. Find the cost of 100 coconuts?

Answer 1

$sp = 6 \\ profit\% = 20 \\ then \: cp = 6 \times \frac{100}{120} = 5 \\ coxst \: for \: 100 = 100 \times 5 = 500$