Two pipes A and B can fill a tank in 15 and 3 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?
Answer with explanationAnswer: Option A
As per given statements,
In 1min, part filled by pipe A = 1/15
In 1min, part filled by pipe B fills = 1/3
Together, in 1min, they fill = (1/15) + (1/3) = 2/5 part
Therefore, together they fill the tank in 5/2min = 150sec