Quote:
Originally Posted by hks786
In 1 hour Sally will paint 1/4 and John will paint 1/6.
Therefore in 1 hour they will paint:
1/4 + 1/6
= 6/24 + 4/24
= 10/24
= 5/12
Therefore in 2 hours they will paint 10/12 of the house. For the last 2/12:
For 5/12 it takes 1 hour so for 2/12 we are looking at 2/5 of an hour which is 24 mins. So in total 2 hours and 24 mins.
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why am i not surprised someone not american was able to get the answer?