A boy has enough money to buy 20 books . If each book costs 25 paose less, he could buy 2 more books and still have 70 paise left. What is the money boy has?
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Cost of one book = x
Cost of 20 books = 20x
20x = (x - 0.25)22 + 0.70 (given)
20x = 22x - 5.50 + 0.70
2x = 4.8
x = 2.4
The money he had = 20 x 2.4 = Rs. 48
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1
From NSTSE BOOK the question is it is a good book you can buy. I *got* this question in NSTSE BOOK Class 7...
Cost of one book = x
Cost of 20 books = 20x
20x = (x - 0.25)22 + 0.70 (given)
20x = 22x - 5.50 + 0.70
2x = 4.8
x = 2.4
The money he had = 20 x 2.4 = Rs. 48
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