Problema Solution
Joe can paint a house in 5 days whike Martha can do the same house in 4 days. How long will it take themn to paint the house if they do it together
Answer provided by our tutors
Let 'x' represent the number of days Joe and Martha need to paint the house together.
Joe's rate is: 1/5 house per day
Martha's rate is: 1/4 house per day
The together rate is: 1/x house per day
Now we can write the following equation:
1/5 + 1/4 = 1/x
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click here to see the equation solved for x
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x = 20/9 days
x = 2 2/9 days
x = 2 days 2*24/9 hr
x = 2 days 5 hr 3*60/9 min
x = 2 days 5 hr 20 min
It will take them 2 days 5 hours and 20 minutes to paint the house together.