Question

By selling a radio for Rs 528,Mohit gains 10%.find its cost price.

Answer 1

cost price = 100÷(100+gain%) ×selling price c.p= 100÷(100+10)*528 c.p=( 100÷110 ) ×528 c.p= 480

Answer 2

C.P. = $\frac{100}{(100+profit percent)}* s.p$
       = $\frac{100}{100+10} *528$
       = $\frac{10}{11} *528$
       = rs. 480