Question

A and B working together can mow a field in
56 days and with the help of C, they could have
mowed it in 42 days. How long would C take
by himself ?​

Answer 1

Answer:

A+B's 1 day work =

56

1

A+B+C 's 1 day work =

42

1

Thus, C's 1 day work =

42

1

−

56

1

=

168

4−3

=

168

1

Hence, C can complete work in 168 days.