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A balance of a trader weighs 20% less than it should be. Still the trader mark-up his goods to get the overall profit of 35%. What is mark-up on the cost price?
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- 7%
- 8%
- 9%
- 8.5%
Correct Option: B
We know that ,
| Required percent = |  | a - b - | a × b |  | % | |
| 100 |
Here , a = 35% , b = -20% ( loss )
| Required percent = | | 35 - 20 - | 35 × 20 | | % = 8% | |
| 100 |
