Question

Gautam takes 5 hours to paint a wall and the mirror takes 6 hours to paint the same wall if they work together how long will it take to paint the wall

Answer 1

Let A(goutam) : 5 day
B. : 6day

LCM : 30
Then A = 6
B= 5

They work together = LCM / A+B
= 30/11
= 2.72 days