Mathematics
Medium
Question
Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is?
A
60 gallons
B
100 gallons
C
120 gallons
✓ Official correct answer
D
180 gallons
Community credibility
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A
60 gallons
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B
100 gallons
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C
120 gallons
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D
180 gallons
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