A new housing development will have 105 houses. All the houses have the same floor plan and dimensions. Carlos can paint a house by himself in 4 days. Manuel can paint a house in 3 days.
A normal workweek is 5 days how many weeks would it take them to work together to paint 105 houses?
now suppose that they need to finish in 28 weeks but only have enough to pay for one extra crew member. What is the greatest number of days the third
worker can take to paint each house?