Number System
Quick practice
Question 1 of 5
Pipe P₁ can fill a tank in 16 minutes and pipe P₂ empties it in 24 minutes. If both the pipes are opened together, after how many minutes should P₂ be closed, so that the tank is filled in a total of 30 minutes?
A
20 min
B
16 min
C
21 min
D
18 min
Get unlimited practice with Railway Exams subscription
Boost your performance with adaptive practice tests
Practice every concept in the syllabus
Compare your speed and accuracy with your peers
Download the app and practice on the go