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Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what

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Bunuel
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Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what [#permalink] New post   31 Jul 2016, 04:21
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Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what is the greatest number of matching pairs she could have left?

A. 21

B. 20

C. 19

D. 16

E. 15
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B
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rohit8865
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Re: Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what [#permalink] New post   31 Jul 2016, 05:23
Bunuel wrote:
Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what is the greatest number of matching pairs she could have left?

A. 21

B. 20

C. 19

D. 16

E. 15

greatest number of paired shoes means greatest number of lost pairs
9 shoes have 4 pairs and 1 extra shoes of a pair .so a otal of 5 pairs she loses
leftover pair=20
Ans B
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MarkusKarl
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Re: Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what [#permalink] New post   31 Jul 2016, 12:13
Marcella has 25 pairs of shoes and loses 9 shoes.

To minimize the loss of identical pairs of shoes we want Marcella to lose as many identical pairs as possible. This would yield 4 identical pairs and 1 additional shoe (destroying 5 pairs of shoes).

The 25 pairs of shoes minus the 5 'destroyed' pairs yields 20 pairs that still fulfill the requirements.

Answer: B
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Re: Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what [#permalink] New post   03 Aug 2016, 10:00
25*2 = 50
-9
41

pairs = x*2
20*2 < 41
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Re: Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what [#permalink] New post   28 Mar 2024, 08:37
Bunuel wrote:
Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what is the greatest number of matching pairs she could have left?

A. 21

B. 20

C. 19

D. 16

E. 15

­Max possible will be all 4 pairs of matching shoes and 1 single shoe, ie 4 pair + 1 pair is lost.

Thus, maximum matching pair of shoes possible will be 25 - 5 = 20, Answer will be (B)
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Re: Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what [#permalink]
28 Mar 2024, 08:37
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