Question

pipe a can fill a tank in 60 minutes and pipe b can fill the tank in 180 minutes if both pipes are opened together how long will take for them to fill the tank?​

Answer 1

Answer:

45 minutes

Step-by-step explanation:

A alone filled in 1 minute 1/60

B alone filled in 1 minute 1/180

so togather (1/80+1/60)

                   =4/180

                   =45 minutes