Study the graph which shows daily wages (in Rs.) with a number of workers and answer the question that follows.    If the ratio of the total number of workers whose daily wages are less than Rs. 450 to the total number of workers whose daily wages are Rs. 600 or above is a : b, then what is the difference between b and a?

Study the graph which shows daily wages (in Rs.) with a number of workers and answer the question that follows.    If the ratio of the total number of workers whose daily wages are less than Rs. 450 to the total number of workers whose daily wages are Rs. 600 or above is a : b, then what is the difference between b and a? Correct Answer 2

Calculation:

No. of workers whose daily wages is less than 450 = 30

No. of workers whose daily wages is more than 600 = 90

So, ratio = 1 : 3 = a : b

b - a = 3 - 1 = 2

∴ Required answer is 2