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14 Jul 2020, 03:57
Kudos
Bookmarks
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
61% (02:45) correct
39%
(02:58)
wrong
based on 186
sessions
History
Date
Time
Result
Not Attempted Yet
Cement truck 1 can pour 600 gallons of concrete mix in 2.1 hours. Cement truck 2 can pour the same amount in 2.9 hours. How many minutes longer than cement truck 1 would it take cement truck 2 to pour 130,000 quarts of concrete mix?
A. 48
B. 126
C. 432
D. 2600
E. 6825
A. 48
B. 126
C. 432
D. 2600
E. 6825
14 Jul 2020, 04:54
Kudos
Bookmarks
1 quart = 0.25 gallons
Therefore 1,30,000 quarts = 32,500 gallons
To convert hours into minutes, multiply by 60
Time taken by Cement Truck 1 for 600 gallons = 2.1 hours * 60 = 126 minutes
Therefore Time taken to fill 32500 gallons = (32500 * 126) / 600 = 6825 minutes
Time taken by Cement Truck 2 for 600 gallons = 2.9 hours * 60 = 174 minutes
Therefore Time taken to fill 32500 gallons = (32500 * 174) / 600 = 9425 minutes
Excess time = 9425 - 6825 = 2600 minutes
Option D
Arun Kumar
Therefore 1,30,000 quarts = 32,500 gallons
To convert hours into minutes, multiply by 60
Time taken by Cement Truck 1 for 600 gallons = 2.1 hours * 60 = 126 minutes
Therefore Time taken to fill 32500 gallons = (32500 * 126) / 600 = 6825 minutes
Time taken by Cement Truck 2 for 600 gallons = 2.9 hours * 60 = 174 minutes
Therefore Time taken to fill 32500 gallons = (32500 * 174) / 600 = 9425 minutes
Excess time = 9425 - 6825 = 2600 minutes
Option D
Arun Kumar
14 Jul 2020, 05:06
Kudos
Bookmarks
Difficult to know 1 gallon is 4 quarts if you dont have net and you are not from the US so it is a bad question.
Math is simple
130,000/(600*4)*((2.9-2.1)*60)
=2600
D
Math is simple
130,000/(600*4)*((2.9-2.1)*60)
=2600
D
