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Successive discounts of 10 %, 20 % and 30 % is equivalent to a single discount of :
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- 60 %
- 49.6 %
- 40.5 %
- 36 %
Correct Option: B
Single equivalent discount for successive discounts of 10% and 20%
Here , a = 10% and b = 20%
Equivalent discount =  a + b - | a x b |  % |
| 100 |
| = |  | 10 + 20 - | 20 x 10 |  | % |
| 100 |
= 28 %
Single equivalent discount for 28% and 30%
Here , a = 28% and b = 30%
| Equivalent discount = a + b - | a x b | % |
| 100 |
| = | | 28 + 30 - | 28 x 30 | | % |
| 100 |
= 49.6 %
