If two pipes can fill a tank in 20 minutes & 30 minutes respectively. If both the pipes are opened simultaneously, then the tank will be filled in
A10 minutes
B15 minutes
C12 minutes
D18 minutes
A10 minutes
B15 minutes
C12 minutes
D18 minutes
Related Questions:
A can complete % of a work in 5 days and B can complete 40% of the same work in 10 days. They work together for 5 days and then B left the work. A alone will complete the remaining work in: