Question

Pens are bought at 12 for a rupee and sold at 9 for a rupee. Find the gain%.

Answer 1

Answer:

Buy:-

12 pens=cost 1 rupee.

Cp of 1pen=1/12

Sold:-

9 pens=cost 1rupee.

Sp of 1 pen=1/9

Profit:

Sp-Cp

(1/9)-(1/12)

4-3/36

1/36

Step-by-step explanation:

Answer 2

Answer:

pens are bought for 12 for a rupees

so cost of 12 pens price = 1

so cost of 1 pen = 1/12

it is sold at 9 for a price

so selling price of 9 pens =1

so cost of one pen = 1/9

1/9-1/12

=4-3/36

1/36

gain %= gain/cp ×100

=1/36/1/12 ×100

=12/36×100

=33.33

therefore the gain =33.33

I hope my answer will help you my dear friend