A shop owner sells 30mtr of cloth and gains SP of 10 metres. Find the gain %?
Choose the correct choice from the following choices:
A) 30%
B) 40%
C) 50%
D) 65%
E) 72%
Here, selling price of 10 m cloth is obtained as profit.   Profit of 10 m cloth = (S.P. of 30 m cloth) – (C.P. of 30 m cloth)   Selling price of 20 m cloth = Selling Price of 30 m of cloth   Let cost of each metre be Rs. 100.   Therefore, cost price of 20 m cloth = Rs. 2000 and S.P. of 20 m cloth = Rs. Rs. 3000   Profit% = 10 × 100 = 50%   20   Profit of 50 % was made by the merchant.   50%
<result>C</result>
A shop owner sells 30mtr of cloth and gains SP of 10 metres. Find the gain %?