RBI Assistant Model Paper 8

Let total work be 60 units (LCM)
So, efficiency of Raghav and Dev be 4 units/day and 3 units/day respectively.
4-day work of Raghav and Dev = (4+3)×4 = 28 units
Remaining work = 60−28 = 32 units
So, fraction of work left =

32

60

=

8

15