Question

A and B can finish a work in 2 Hours 24 minutes if a alone can finish the work in 4 hours how long will be take to finish the work alone​

Answer 1

Step-by-step explanation:

as a and b together can do in 144 min and a alone can do in 240 min

using formula : xy/(x+y) =144 where x=240 and we need to calculate for y

solving we get you= 30 min or 1/2 hour