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A pocket contains pennies and dimes only, in the ratio 4:1, respective

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Tuck School Moderator
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Joined: 31 Aug 2016
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GMAT 1: 700 Q49 V37
A pocket contains pennies and dimes only, in the ratio 4:1, respective  [#permalink]

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13 Feb 2019, 08:21
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93% (00:27) correct 7% (00:53) wrong based on 44 sessions

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A pocket contains pennies and dimes only, in the ratio 4:1, respectively. If a coin is randomly selected from the pocket, what is the probability that it is a dime?

a. $$\frac{1}{8}$$
b. $$\frac{1}{5}$$
c. $$\frac{1}{4}$$
d. $$\frac{1}{2}$$
e. $$\frac{4}{1}$$

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Joined: 16 Oct 2011
Posts: 107
GMAT 1: 570 Q39 V41
GMAT 2: 640 Q38 V31
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Re: A pocket contains pennies and dimes only, in the ratio 4:1, respective  [#permalink]

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13 Feb 2019, 10:46
PeepalTree wrote:
A pocket contains pennies and dimes only, in the ratio 4:1, respectively. If a coin is randomly selected from the pocket, what is the probability that it is a dime?

a. $$\frac{1}{8}$$
b. $$\frac{1}{5}$$
c. $$\frac{1}{4}$$
d. $$\frac{1}{2}$$
e. $$\frac{4}{1}$$

Let the number of pennies = 4 and the number of dimes =1. Then the total coins is 5 and the probability of drawing a dime is 1/5. The answer is B
Intern
Joined: 28 Jan 2019
Posts: 7
Re: A pocket contains pennies and dimes only, in the ratio 4:1, respective  [#permalink]

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14 Feb 2019, 02:50
4 pennies and 1 dime.4+1=5coins
1/5
Ans B

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Re: A pocket contains pennies and dimes only, in the ratio 4:1, respective  [#permalink]

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15 Feb 2019, 18:44
1
PeepalTree wrote:
A pocket contains pennies and dimes only, in the ratio 4:1, respectively. If a coin is randomly selected from the pocket, what is the probability that it is a dime?

a. $$\frac{1}{8}$$
b. $$\frac{1}{5}$$
c. $$\frac{1}{4}$$
d. $$\frac{1}{2}$$
e. $$\frac{4}{1}$$

Since the ratio of pennies to dimes is 4 : 1, the simplest case would be that there are 4 pennies and 1 dime. The probability of selecting a dime is 1/(1 + 4) = 1/5.

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Re: A pocket contains pennies and dimes only, in the ratio 4:1, respective   [#permalink] 15 Feb 2019, 18:44
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