A man sold a book for £9.00. This was 40% less than he had paid for it. Calculate how mach he
paid for the book.
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Let the cost be £ X
Then, A. T. Q.
or, 100-40/100 * X = £9.00
or, 60/100 * X = £9.00
or, X = 5/3 * 9.00
or, X = £15.00
Hence, the original cost is £15.00
Then, A. T. Q.
or, 100-40/100 * X = £9.00
or, 60/100 * X = £9.00
or, X = 5/3 * 9.00
or, X = £15.00
Hence, the original cost is £15.00
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