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One pie can fill a tank in 1 hour,
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02 Nov 2019, 23:46
02 Nov 2019, 23:46
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Question Stats:
100% (00:43) correct
0% (00:00) wrong based on 6 sessions
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One pipe can fill a tank in 1 hour, while another pipe can fill the same tank in 2 hours. How long will it take to fill the tank if both pipes are used together?
A 2/3 hour
B 1/3 hour
C 1 hour
D 4/5 hour
E 3/4 hour
SOURCE: 1001 GRE Practice Questions FOR DUMMIES
A 2/3 hour
B 1/3 hour
C 1 hour
D 4/5 hour
E 3/4 hour
SOURCE: 1001 GRE Practice Questions FOR DUMMIES
Re: One pie can fill a tank in 1 hour,
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03 Nov 2019, 07:43
03 Nov 2019, 07:43
Expert Reply
Follow the rules of the board. Give the question a proper title. NOT just fraction.
https://gre.myprepclub.com/forum/rules-to- ... -1652.html
Regards
https://gre.myprepclub.com/forum/rules-to- ... -1652.html
Regards
Re: One pie can fill a tank in 1 hour,
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03 Nov 2019, 20:27
03 Nov 2019, 20:27
patnaiksonal wrote:
One pie can fill a tank in 1 hour, while another pipe can fill the same tank in 2 hours. How long will it take to fill the tank if both pipes are used together?
A 2/3 hour
B 1/3 hour
C 1 hour
D 4/5 hour
E 3/4 hour
SOURCE: 1001 GRE Practice Questions FOR DUMMIES
A 2/3 hour
B 1/3 hour
C 1 hour
D 4/5 hour
E 3/4 hour
SOURCE: 1001 GRE Practice Questions FOR DUMMIES
Here,
Ra = first pipe that can fill in 1 hrs
Rb = second pipe that can fill in 2 hrs
Working together, time required = \(\frac{{Ra * Rb}}{{Ra + Rb}} = \frac{{1 * 2}}{{1 + 2}} = \frac{2}{3}\)
