C.
D.
O 16 hours
O 18 hours
9
The efficiencies of X and Y are in the ratio 7:9. If Y can do a piece of work in 28 hours, then X can do it in:
5:A.
O 36 hours
B.
45 hours
C.
27 hours
D.
() 18 hours
Answers
Answered by
6
Answer:
It will work upto 18 hours option is D
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