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At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
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29 Oct 2024, 01:30
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
78% (01:28) correct
22%
(02:11)
wrong
based on 188
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How long does it take Andrea to complete a job?
(1) Working together, Andrea, Benjamin, and Cheryl can complete the job in 30 minutes, and working together, Benjamin and Cheryl can complete the job in 80 minutes.
(2) The ratio of the time it takes Andrea to complete the job working alone, to the time it takes Cheryl to complete the job working alone, is 1 to 5, and working together Andrea and Cheryl can complete the job in 40 minutes.
(1) Working together, Andrea, Benjamin, and Cheryl can complete the job in 30 minutes, and working together, Benjamin and Cheryl can complete the job in 80 minutes.
(2) The ratio of the time it takes Andrea to complete the job working alone, to the time it takes Cheryl to complete the job working alone, is 1 to 5, and working together Andrea and Cheryl can complete the job in 40 minutes.
02 Nov 2024, 06:41
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02 Nov 2024, 10:00
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Mahendra1996
(2) The ratio of the time it takes Andrea to complete the job working alone, to the time it takes Cheryl to complete the job working alone, is 1 to 5, and working together Andrea and Cheryl can complete the job in 40 minutes.
Assuming the time it takes Andrea to complete the job alone is x, and the time it takes Cheryl to complete the job is y, we have x/y = 1/5, which gives y = 5x.
Working together Andrea and Cheryl can complete the job in 40 minutes means 1/x + 1/y = 1/40.
So, we have two distinct linear equations with two unknowns: y = 5x and 1/x + 1/y = 1/40. We can solve and get the values of both x and y: x = 48, and y = 240.
Hope it's clear.
