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Four scientists collaborate on a research project for which
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08 Apr 2020, 05:20
08 Apr 2020, 05:20
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Four scientists collaborate on a research project for which they receive a prize that comes with a monetary award. They agree to divide the money into four shares in proportion to the time that each scientist spent on the project. If the shares are in the amounts a/2, a/3, a/4, and a/6, respectively, what is the value of a?
A. 1/3
B. 4/15
C. 4/5
D. 5/4
E. 3
Kudos for the right answer and explanation
A. 1/3
B. 4/15
C. 4/5
D. 5/4
E. 3
Kudos for the right answer and explanation
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: Four scientists collaborate on a research project for which
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08 Apr 2020, 06:35
08 Apr 2020, 06:35
Carcass wrote:
Four scientists collaborate on a research project for which they receive a prize that comes with a monetary award. They agree to divide the money into four shares in proportion to the time that each scientist spent on the project. If the shares are in the amounts a/2, a/3, a/4, and a/6, respectively, what is the value of a?
A. 1/3
B. 4/15
C. 4/5
D. 5/4
E. 3
Kudos for the right answer and explanation
A. 1/3
B. 4/15
C. 4/5
D. 5/4
E. 3
Kudos for the right answer and explanation
KEY PROPERTY: The sum of all four shares must be 1.
So, we can write: a/2 + a/3 + a/4 + a/6 = 1
Find common denominators: 6a/12 + 4a/12 + 3a/12 + 2a/12 = 1
Simplify: 15a/12 = 1
Multiply both sides by 12 to get: 15a = 12
Divide both sides by 15 to get: a = 12/15 = 4/5
Answer: C
Cheers,
Brent
gmatclubot
Re: Four scientists collaborate on a research project for which [#permalink]
08 Apr 2020, 06:35
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