DRDO Multi tasking staff Model paper 2

A’s one day’s work =

1

28

A and B’s one day’s work =

1

20

B’s one day’s work =

1

20

−

1

28

=

1

70

(A’s one day’s work) ∶ (B’s one day’s work) =

1

28

:

1

70

=5:2
B’s share is Rs. 600
Let 5x, 2x be A and B’s share.
∴ 2x = 600
∴ x = 300
A’s share = 5x = Rs. 1,500
Total share = 1500 + 600 = Rs. 2,100