AFCAT II 2018 Solved Paper

(b) (A+ B)'s 1 day's work =

1

10

(B + C)'s 1 day’s work =

1

12

(C + A)'s day's work =

1

15

On adding,
2(A + B + C)'s 1 day's work =

1

10

+

1

12

+

1

15

=

6+5+4

60

=

1

4

∴ (A + B + C)'s 1 day's work =

1

8

A's 1 day's work =

1

8

−

1

12

=

3−2

24

=

1

24

∴ A alone will complete the work in 24 days.
Hence option [b] is correct answer.