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A dishonest grocer sells rice at a profit of 10% and also uses weights which are 20% less than the marked weight. The total gain earned by him will be
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- 37.5%
- 40%
- 30.5%
- 35%
Correct Option: A
As per the given in question ,
| Gain by false weight = | × 100 = 25% | 800 |
Here , a = 25% , b = 10%
| ∴ Required gain % = |  | a + b + | a × b |  | % |
| 100 |
| Required gain % = | | 25 + 10 + | 25 × 10 | | % = 37.5 % |
| 100 |
