Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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A customer needs 60 pencils. If he buys them on sale, how many of the 60 pencils can he get for free
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A customer needs 60 pencils. If he buys them on sale, how many of the 60
pencils can he get for free?
SALE
Buy 4 pencils.
Get the 5th pencil FREE.
12
55
40
15
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