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
Hot 27:22
(c) 32:33
(d) none of these
19. Ifx: y = 3:4, the value of x'y + xy : x + y is
(a) 13:12
15) 12:13
(c) 21 : 31
(d) none of these​

Answer 1

Answer:

hi there

Step-by-step explanation:

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

Answer 2

18/ (b) Q : R  = 27 : 22

19/ (image provided)