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Maryam’s wallet contains a combination of $5 and $10 bills

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Joined: 07 Feb 2016
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GMAT 1: 710 Q47 V40
Maryam’s wallet contains a combination of $5 and $10 bills  [#permalink]

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New post 12 Sep 2016, 18:12
1
1
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

56% (01:34) correct 44% (01:35) wrong based on 120 sessions

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Maryam’s wallet contains a combination of $5 and $10 bills. What is the ratio of $5 bills to $10 bills?

(1) The ratio of the number of bills to the total dollar value is 1/9.

(2) The total dollar value of the bills is $360.
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Concentration: General Management, International Business
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Re: Maryam’s wallet contains a combination of $5 and $10 bills  [#permalink]

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New post 12 Sep 2016, 19:36
1
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milano10 wrote:
Maryam’s wallet contains a combination of $5 and $10 bills. What is the ratio of $5 bills to $10 bills?

(1) The ratio of the number of bills to the total dollar value is 1/9.

(2) The total dollar value of the bills is $360.



Let \(x\) be number of 5$ bills and \(y\) be number of 10$ bills, so question is find \(\frac{x}{y}\).

1) \(\frac{(x+y)}{(5x + 10y)} = \frac{1}{9}\)
and this gives \(\frac{x}{y} = \frac{1}{4}\)

sufficient , Select A or D

2) \(5x + 10y = 360\)
=> \(x + 2y = 72\)
multiple solutions for this equation.
Not Sufficient.

Hence Answer is A
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Re: Maryam’s wallet contains a combination of $5 and $10 bills  [#permalink]

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Re: Maryam’s wallet contains a combination of $5 and $10 bills &nbs [#permalink] 24 Mar 2018, 04:46
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