SOLUTION: A farmer has two tractors P and Q. Tractor P, working alone, can plough a piece of land in 5 hours while tractor Q would take 1 hours less than tractor P. (a) Determine the time

Question 1180857: A farmer has two tractors P and Q. Tractor P, working alone, can plough a piece of land in 5 hours while tractor Q would take 1 hours less than tractor P.
(a) Determine the time the two tractors ploughing together,would take to complete the work. (3 marks)
(b) One day, the tractors started to plough the piece of land together. After 40 minutes,tractor P broke down but Q continued alone and completed the work.
Calculate the total time taken to plough the piece of land that day. (4 marks)
(c) In another season, the farmer hired an additional tractor R to assist P and Q which retained the same rate of working as before. The three tractors took I hour 12 minutes to plough the same piece of land. The owner of tractor R was paid some money proportional to the work done by the tractor.
If the total work was valued at ksh 20000 , find the amount of money paid to the owner of tractor R.
Answer by ikleyn(52799) (Show Source): You can put this solution on YOUR website!
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