X is 4 times more efficient as Y , then the number of days taken by X and Y are in the ratio ?

X is 4 times more efficient as Y , then the number of days taken by X

1.	X is 4 times more efficient as Y , then the number of days taken by X and Y are in the ratio ?
A.	8 : 1
B.	1 : 5
C.	6 : 8
D.	5 : 1
Answer» C. 6 : 8

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X is 4 times more efficient as Y , then the number of days taken by X and Y are in the ratio ?

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