Question

By selling a bicycle for ₹135, a shopkeeper loses 10%. how much percent would he gain or lose by selling it for ₹165?

Answer 1

let the cp = x

sp = 100 - 10 = 90% of x

so, 90/100 of x = 135

x = 13500/90

x = 150

Cp = 150

now to sell it for 165

he will gain 165 - 150 = 15

gain % = 15/150 * 100 = 10%