Question

Three men A, B, and
C working together,
complete a work in
10, 15, and 30 days
respectively. If A and
B left the work 4
days and 3 days
respectively before
the completion of
the work, how many
days in total did it
take to finish the
work?
6
8
9​

Answer 1

Answer:

8 Days to finish the Work

Step-by-step explanation:

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Answer 2

Answer:

One day's work of A, B and C = (1/24 + 1/30 + 1/40) = 1/10.

C leaves 4 days before completion of the work, which means only A and B work during the last 4 days.

Work done by A and B together in the last 4 days = 4 (1/24 + 1/30) = 3/10.

Remaining Work = 7/10, which was done by A,B and C in the initial number of days.

Number of days required for this initial work = 7 days.

Thus, the total numbers of days required = 4 + 7 = 11 days.

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