Question

A boy 9 apple for rupee 9.60 and sold them at 11 for Rs 12. find his gain or loss percent​

Answer 1

Since the boy bought 9 apples and sold 11 apples then this must be only possible if he a total of multiple of 9 and 11.

therefore, let the total l.c.m of 9 and 11 which is 99

now, CP of 9 apples = Rs.9.60

therefore, CP of 99 apples = Rs.9.60 × 11 = Rs.105.6

also, SP of 11 apples = Rs.12

therefore, SP of 99 apples =Rs.12 × 9 = Rs.108

As SP > CP , therefore,

profit = SP - CP

= 108 - 105.6=

Rs.2.4

Profit% = profit/cp × 100

= 2.4/105.6 × 100

= 2.27%

hence profit percent earned by the boy is 2.27%

Hope it helps you