AFCAT I 2020 Solved Paper

A's 1 day's work =

1

10

A's 4 day's work =

4

10

Remaining work =1−

4

10

=

(10−4)

10

=

6

10

6

10

work, B complete in =9 days
B alone can complete the whole work in =9×

10

6

=15 days
B's 1 days work =

1

15

A's and B's 1 day's work =

1

15

+

1

10

=

(2+3)

30

=

5

30

=

1

6

A and B both can complete the whole work in =6 days