Question

A shopkeeper gains 20% wjile buying the goods and 30% while selling them. Find his total gain percentage.​

Answer 1

Answer:

$\huge\underline\bold {Answer:}$

Let the C.P. (cost price) of the goods be 100 rupees. As the shopkeeper gains 20% at that time of buying, the shopkeeper buys the articles worth 120 rupees.

Therefore S.P. (selling price)

$= \frac{120(100 + 30)}{100} \\ = \frac{120 \times 130}{100} = 156$

Therefore percentage gain

$= \frac{(156 - 100)}{100} \times 100 \\ = 56\%$

Answer 2

Step-by-step explanation:

ANSWER

Let the C.P. of the goods be Rs. 100.

As the shopkeeper gains 20% at the time of buying, the shopkeeper buys the articles worth Rs. 120.

∴ S.P. = Rs.

100

120×(100+30)

= Rs.

100

120×130

= Rs. 156

∴ % gain =

100

(156−100)

×100=56 %