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Eileen takes 6 hours alone at a constant rate to bake a

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Farina
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Eileen takes 6 hours alone at a constant rate to bake a [#permalink] New post   Updated on: 09 Dec 2020, 01:36
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93% (00:46) correct 6% (00:41) wrong based on 32 sessions

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Eileen takes 6 hours alone at a constant rate to bake a wedding cake that takes Freida twice as long to bake alone at her constant rate.


Quantity A
Quantity B
The time it takes to bake the cake working together at their respective constant rates
4 hours



A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
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C

Originally posted by Farina on 26 Jul 2020, 03:50.
Last edited by Carcass on 09 Dec 2020, 01:36, edited 1 time in total.
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Re: Eileen takes 6 hours alone at a constant rate to bake a [#permalink] New post   26 Jul 2020, 06:06
1
Eileen = 6, Freida = 12.

Let the combined time taken be X. Then

1/X = 1/6 + 1/12
1/X = 3/12
X = 4

Answer is C.
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Re: Eileen takes 6 hours alone at a constant rate to bake a [#permalink]
26 Jul 2020, 06:06
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