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01 Jul 2019, 01:28
Kudos
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B
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Difficulty:
5%
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Question Stats:
98% (01:15) correct
2%
(02:37)
wrong
based on 50
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It takes an inlet pipe 2 minutes to supply 30 gallons of water to a pool. How many hours will it take to fill a 27,000 gallon pool that starts out empty?
A. 25 hours
B. 30 hours
C. 35 hours
D. 40 hours
E. 45 hours
A. 25 hours
B. 30 hours
C. 35 hours
D. 40 hours
E. 45 hours
01 Jul 2019, 01:31
Kudos
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Bunuel
It takes an inlet pipe 2 minutes to supply 30 gallons of water to a pool
--> 15 gallons can be filled in 1 min
--> 27,000 can be filled in 27,000/15 = 1800 min = 1800/60 hours = 30 hours
IMO Option B
Pls Hit kudos if you like the solution
01 Jul 2019, 02:03
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If we use the given info as it is, the method is quicker..
Just that we'll have to divide by 30 to convert it into hours instead of usual 60..
Given the values
2 mins for 30 hours gallons
And for 27000 gallons we need to Divide it by 30 minutes
27000/30 = 900 minutes
To convert it to hours we have to divide by 30 here and not 60 (as we used the rate 2 mins)
900/30 hours = 30
option B
Posted from my mobile device
Just that we'll have to divide by 30 to convert it into hours instead of usual 60..
Given the values
2 mins for 30 hours gallons
And for 27000 gallons we need to Divide it by 30 minutes
27000/30 = 900 minutes
To convert it to hours we have to divide by 30 here and not 60 (as we used the rate 2 mins)
900/30 hours = 30
option B
Posted from my mobile device
