Question

if the cost price of 9 pens is equal to the selling price of 11pens then what is gain or loss percentage​

Answer 1

Step-by-step explanation:

LOGICAL REASONING

If the cost price of 9 pens is Rs. 11 and the selling price of 11 pens is Rs. 9, find the profit or loss in percent.

C.P. : 9 pens Rs. 11

S.P. : 11 pens Rs. 9

Remark: Make the C.P. and S.P. equal and hence multiplying them by 9 and 11

respectively.

C.P. : 9 × 9 pens (articles 9 × 9)

S.P. : 11 × 11 pens (articles 11 × 11)

Since, cost price of 81 pens is equal to selling price of 121 pens, hence there its loss.

Loss (%) =

121

121−81

×100

=

121

40

×100

=33.06%