engineering recuitment PGCIL Diploma Trainee Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
A pipe can fill an empty tank in 15 minutes while another pipe can empty the same fully filled tank in 20 minutes. If both the pipes are opened simultaneously, then how much time (in minutes) will it take to completely fill the empty tank?
1
48
2
56
3
54
4
60