If Rohan purchased 20 books at the rate of Rs. 120 each, 30 books at the rate of Rs. 150 each and 15 books at the rate of Rs. 100 each, then find the average cost price per book.
- Rs. 133.79
- Rs. 134.45
- Rs. 178.61
- Rs. 129.23
If Rohan purchased 20 books at the rate of Rs. 120 each, 30 books at the rate of Rs. 150 each and 15 books at the rate of Rs. 100 each, then find the average cost price per book?
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