Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Quantitative Aptitude Time and Work Pipe and Cistern
It takes 12 hrs to fill a swimming pool using two pipes. If the pipe of the larger diameter is used for 4 hrs and the pipe of smaller diameter for 9 hrs, only half the pool can be filled. How long would it take for the pipe with larger diameter to fill the pool?
1
30 hrs
2
20 hrs
3
15 hrs
4
25 hrs