SSC Sample Paper Mock Test-16 SSC CGL Tear-II Paper-1

A person having bought goods for Rs. 400 sells half of it at a gain of 5%, at what gain per cent must he shell the remainder so as to gain 20% on the whole?

A) 30%

B) 32%

C) 34%

D) 35%

Correct Answer: D

Solution :

Total gain required = 20% of

Rs. \[400=\frac{20}{100}\times 400\]= Rs. 80

Cost of half of the goods = Rs. 200, Gain = 5%

SP of half the goods = Rs.\[200\times \frac{105}{100}\]= Rs. 210, Gain = Rs. 10

Remaining required gain = Rs.\[(80-10)=\]Rs. 70

Remaining goods = Rs. 200

Gain per cent \[=\frac{70}{200}\times 100%=35%\]