Ram buys 13 balls for Rs. 390 and sells them at the rate of Rs. 33 per ball. Find his gain percentage.
- A11.50%
- B10%
- C10.50%
- D11%
Solution & Step-by-step Explanation
Total cost price (CP) for 13 balls = Rs. 390.
CP of 1 ball=
13
390
=Rs. 30
Selling price (SP) of 1 ball = Rs. 33.
Profit per ball=SP−CP=33−30=Rs. 3
The gain percentage is:
Gain %=(
CP
Profit
)×100
Gain %=(
30
3
)×100=
10
1
×100=10%
CP of 1 ball=
13
390
=Rs. 30
Selling price (SP) of 1 ball = Rs. 33.
Profit per ball=SP−CP=33−30=Rs. 3
The gain percentage is:
Gain %=(
CP
Profit
)×100
Gain %=(
30
3
)×100=
10
1
×100=10%