Two pipes A and B can fill a tank in 15 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank ?
A10 min
B15 min
C25 min
D50 min
A10 min
B15 min
C25 min
D50 min
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: