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 do % of a work in 10 days and B can do % of the same work in 8 days. Both together worked for 8 days then C alone completes the remaining work in 3 days. A and C together will complete part of the original work in: