PLZZ SOLVE THIS PRPBLEM... ITS CLASS 10.. ICSE QSTN...
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Let the original cost of each book = x
Total Books brought for 960 = 960/x
Now,
The cost of each book = Rs. (x - 8)
Number of books bought for 960 = 960/(x - 8)
From the given information, we have:
960/(x - 8) - 960/x = 4
=> x^2 - 8x = 1920
=> x^2 - 8x - 1920 = 0
=> x^2 - 48x + 40x - 1920 = 0
=> x(x - 48) + 40(x - 48) = 0
=> x = 48 or x = -40
But x cannot be negative.
∴ x = 48.
The original cost of each book = 48.
Hope it helps!.
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