1.

X, Y and Z can complete a piece of work in 8, 20 and 25 days respectively. Working together, they will complete the same work in:

A. \(\frac{{180}}{{43}}\) days
B. \(\frac{{162}}{{43}}\) days
C. \(\frac{{200}}{{43}}\) days
D. \(\frac{{172}}{{43}}\) days
Answer» D. \(\frac{{172}}{{43}}\) days


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