Problema Solution
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
Answer provided by our tutors
sally can paint 1/4 in 1 hr
jonh can paint 1/6 in 1 hr
hence they can paint x(1/4+1/6)=1
x=24/10=2.4 hr