Question

A man sold a radio set for ₹250 and gained one ninth of its cp. find its cp

Answer 1

HERE IS YOUR ANSWER ↓↓
SP = 250
LET THE CP BE X
GAIN = 1/9 OF COST PRICE = X/9
GAIN = SP-CP
X/9 = 250-X
X/9 + X = 250
10X/9 = 250
10X = 250×9
X = 250×9/10
= 25×9
=RS. 225
YOUR ANSWER