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29 Nov 2022, 14:57
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Bunuel
Hi guys please advice the statement says they can finish the same in j and B hours. Now statement also says they have started together at 12.00 and finsihed the task together at 4.48 so now we have a task completed by too different people is same time span. Does it not mean j=b
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29 Nov 2022, 16:17
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puneetfitness
Hi puneetfitness,
From the prompt, we know that J and B are both EVEN INTEGERS. We're asked if J and B are EQUAL. This is a YES/NO question.
Based on the information in Fact 1, we can use the Work Formula: (X)(Y)/(X+Y) to answer the question.
The prompt tells us that Jane and Bill start working TOGETHER at noon - and Fact 1 tells us that they finish the job at 4:48pm. Thus, it takes the two people 4 4/5 hours to paint the wall together. There are only 2 possible pairs of EVEN INTEGERS that will 'fit' the Work Formula:
(X)(Y)/(X+Y) = 24/5
6 and 24
8 and 12
In both situations, the answer to the question is NO (J and B will NEVER be equal to one another), so Fact 1 is SUFFICIENT.
GMAT assassins aren't born, they're made,
Rich
Contact Rich at: Rich.C@empowergmat.com
01 Mar 2025, 10:48
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