The table given below shows the number of officers working in six companies.  Companies   Officers  P 150 Q 250 R 350 S 100 T 200 U 550 What is the ratio of number of officers working in Q to the number of officers working in R?

7 : 5 6 : 7 7 : 4 5 : 7

5 : 7

Ratio of number of officers working in Q to the number of officers working in R = 250 : 350 = 5 : 7