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Working independently, Machine A can complete a work in 3.5 hours, whi
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20 Sep 2021, 03:45
20 Sep 2021, 03:45
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Working independently, Machine A can complete a work in 3.5 hours, while Machine B can complete the same work in x hours. Working simultaneously, they together complete the same work in 1.5 hours.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Source: manhattanreview
Quantity A |
Quantity B |
3 |
x |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Source: manhattanreview
Retired Moderator
Joined: 19 Nov 2020
Posts: 326
Given Kudos: 64
GRE 1: Q160 V152
Working independently, Machine A can complete a work in 3.5 hours, whi
[#permalink]
20 Sep 2021, 05:12
20 Sep 2021, 05:12
1
\(1/3.5+1/x=1/1.5\)
\(2/7+1/x=2/3\)
multiply both sides by \(21x\), \(6x+21=14x\), \(x=21/8\)
Quantity A: \(3\)
Quantity B: \(21/8\)
Quantity A > Quantity B
Answer is A
\(2/7+1/x=2/3\)
multiply both sides by \(21x\), \(6x+21=14x\), \(x=21/8\)
Quantity A: \(3\)
Quantity B: \(21/8\)
Quantity A > Quantity B
Answer is A
Carcass wrote:
Working independently, Machine A can complete a work in 3.5 hours, while Machine B can complete the same work in x hours. Working simultaneously, they together complete the same work in 1.5 hours.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Source: manhattanreview
Quantity A |
Quantity B |
3 |
x |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Source: manhattanreview
Working independently, Machine A can complete a work in 3.5 hours, whi
[#permalink]
06 May 2022, 23:04
06 May 2022, 23:04
in 2/7 + 1/x = 2/3 eqn, doesnt '1/x' become '2/2x' since multiplied by 2
