Wednesday, August 21, 2013

A painter can paint a kitchen in 8 hours. An apprentice can paint the same kitchen in 24 hours. If they worked together, how long would it take them to paint the kitchen?

we can add their work rates, to solve for the time: 
1/t=1/8+1/24
1/t=3/24+1/24
1/t=4/24
t=6 

together they finish in 6 hrs

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