SOLUTION: kipketer can cultivate a piece of land in 7hours while Wanjiku can do the same work in 5hours.Find the time they would take to cultivate the same piece of land when working togethe
Question 1107344: kipketer can cultivate a piece of land in 7hours while Wanjiku can do the same work in 5hours.Find the time they would take to cultivate the same piece of land when working together Answer by ikleyn(52780) (Show Source):
K makes of the job per hour.
W makes of the job per hour.
Working together, they make + of the job per hour.
+ = + = .
Thus working together they make of the job per hour.
It means they need hours = 35*5 minutes = 175 minutes = 2 hours and 55 minutes to complete the job working together.
Answer. 2 hours and 55 minutes.
Solved.
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It is a typical joint work problem.
