SOLUTION: rebecca can type a manuscript on 6 hours. if jessa helps her they can type the whole manuscript in 4 hours. how long would it take jessa if she did all the typing alone?
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-> SOLUTION: rebecca can type a manuscript on 6 hours. if jessa helps her they can type the whole manuscript in 4 hours. how long would it take jessa if she did all the typing alone?
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Question 1086550: rebecca can type a manuscript on 6 hours. if jessa helps her they can type the whole manuscript in 4 hours. how long would it take jessa if she did all the typing alone? Answer by ikleyn(52814) (Show Source):
Their combined rate of work is of the manuscript per hour.
Subtract of the manuscript per hour, which is Rebecca's rate, from it:
= = ,
and you will get the Jessa rate.
Thus Jessa will type the manuscript in 12 hours working alone.
Answer. Jessa will type the manuscript in 12 hours working alone.
Solved.
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The lesson to learn from this solution:
You can distract from the combined rate to get the individual rate.
