P, Q and R take 18, 15 and 10 days respectively to complete a job. Compare their efficiencies as a ratio.

P, Q and R take 18, 15 and 10 days respectively to complete a job. Com

1.	P, Q and R take 18, 15 and 10 days respectively to complete a job. Compare their efficiencies as a ratio.
A.	5 : 6 : 9
B.	5 : 5 : 9
C.	5 : 6 : 4
D.	5 : 6 : 10
Answer» B. 5 : 5 : 9

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P, Q and R take 18, 15 and 10 days respectively to complete a job. Compare their efficiencies as a ratio.

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