SOLUTION: A is twice as B and B is twice as C. Tractor A B and C plowed 8 hectares field in just 3 hours. Find the time of each tractors to plow 10 hectares field individally

Question 1139209: A is twice as B and B is twice as C. Tractor A B and C plowed 8 hectares field in just 3 hours. Find the time of each tractors to plow 10 hectares field individally
Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!
You mean, "twice the speed of" or "twice as fast as", to be included in the first part of the description.

C has plowing speed x hectares per hour
B has speed 2x hectares per hour
A has speed 4x hectares per hour

TRACTOR        PLOW RATE, hectares per hours
A              
B              
C

Time for tractor A to plow 10 hectares?

6 hours 34 minutes, tractor A alone, 10 hectares
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