Mr. sharrone can paper a room in 3 hours. his assistant needs 5 hours. if mr. sharrone works 1 hour and then his assistant compl
etes the job alone, how long will it take the assistant to finish the job?
1 answer:
Mr Sharrone can do 1/3 of the job each hour
<span>the assistant does 1/5 of the job each hour </span>
<span>1(1/3) + H (1/5) = 1 (complete job) </span>
<span>1/3 + 1/5 H = 1 </span>
<span>1/5 H = 1 - 1/3 = 2/3 </span>
<span>H = (2/3) / (1/5) = 10/3 = 3 1/3 hours to complete the job</span>
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