The table given below shows the number of working days of a company in 5 years. Years Working days P 110 Q 310 R 160 S 60 T 210 What are ratio of number of working days in year R to the number of working days in year T ?

16 : 21 15 : 22 21 : 17 21 : 16

16 : 21

Ratio of working days in R to T = 160 : 210 = 16 : 21