A) Rs. 84
B) Rs. 83
C) Rs. 68
D) Rs. 100
Correct Answer: D
Solution :
| [d] Let previous average price of each book = Rs. x According to the question, \[\frac{60x+336}{60+4}=(x-1)\] \[\Rightarrow \] \[60x+336=64x-64\] \[\Rightarrow \] \[64x-60x=336+64\]\[\Rightarrow \]\[4x=400\] \[\Rightarrow \] x = Rs. 100 |
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