One pipe can fill a tank in 20 minutes, while another takes 30 minute – McqOptions

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1.	One pipe can fill a tank in 20 minutes, while another takes 30 minutes to fill the same tank. How long would it take the two pipes together to fill the tank?
A.	50 min
B.	12 min
C.	15 min
D.	25 min
Answer» C. 15 min

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