| The marked price of a clock is Rs. 3200. It is to be sold at Rs. 2448 at two successive discounts. If the first discount is 10%, then the second discount is [SSC (CGL) 2010] |
A) 5%
B) 10%
C) 15%
D) 20%
Correct Answer: C
Solution :
| Selling price after first discount |
| \[=3200-\frac{10}{100}\times 3200\] |
| \[=3200-320=2880\] |
| Let second discount be x%. |
| Selling price after second discount |
| \[2448=2880-\frac{x}{100}\times 2880\] |
| \[\Rightarrow \]\[\frac{x\times 2880}{100}=2880-2448\] |
| \[\Rightarrow \] \[x=\frac{432\times 100}{2880}=\frac{30}{2}=15\]% |
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