Question

please answer by solving​

Answer 1

Answer:

15 days

Step-by-step explanation:

Time taken by A, B and C to plough the field together = 4 days

Time taken by A to plough the field = 12 days.

Time taken by B to plough the field = 10 days.

∴ A, B and C's 1 days' work = A's 1/12 B's 1/10 1 days' work = 1

Now, C's 1 days' work = (A, B and C's 1 days' work) - (A and B's 1 days' work)

= 1/4 − (1/12 + 1/10) =  11/60

= 1/4 - 11/60 =  1/15

Hence, C can plough the field in 15 days.