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X can do 1/4 of a work in 10 days, Y can...

X can do `1/4` of a work in 10 days, Y can do `40%` of the work in 40 days and Z can do `1/3` of the work in 13 days. Who will complete the work first? a. `X` b. `Y` c. `Z` d. `X and Z ` both

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