Problema Solution
If bob paints a house in 4 hrs and tom in 6hrs how long will it take them to paint a house in 10hrs ?
Answer provided by our tutors
bob work of 1 hr = 1/4
tom work of 1 hr = 1/6
total 1 hr work = 1/4 + 1/6 = 5/12
1 work will be completed in 12/5 = 2.4 hours