Problema Solution
A man and a woman working together can paint a wall in a certain house in 3 days less than a man alone. A woman working alone takes 1 day more than a man. Determine the approximate time they take when they work together?
Answer provided by our tutors
The time they take when they work together is x, so a man work alone is (x+3), a woman work alone is (x+4)
So the equation is
1/(x+3) + 1/(x+4) = 1/x
So
x = 3.46
S0 the approximate time they take when they work together is 3.46 days