IBPS Clerk Prelims Model Paper 4

The total sale of all brands of cycles taken together is given as:
For 1986, 10 + 40 + 50 = 100 units
For 1987, 20 + 30 + 40 = 90 units
For 1988, 30 + 30 + 60 = 120 units
For 1989, 20 + 40 + 50 = 110 units
For 1990, 25 + 40 + 60 = 125 units
For 1991, 30 + 50 + 65 = 145 units
Clearly, in 1987, it is the lowest.