Question

18. P, Q and R are three cities. The ratio of average temperature between P and Q is 11:12
and that between P and R is 9 : 8. The ratio between the average temperature of Q and R
is
(a) 22:27
(b) 27:22
(c) 32 : 33
(d) none of these​

Answer 1

P /Q = 11 / 12        P / R = 9 / 8

Q / R =   P/R  /   P/Q    =  9/8  /  11/12  = 9*12 / 8*11  = 27/22 

Q : R  = 27 : 22

Hence, B is the correct option

Hope it helps u....