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 1 TC​

Answer 1

Answer:

(b) 27:22

Step-by-step explanation:

Given,

P :Q = 11 : 12 and P : R = 9 : 8

To equate the ratio of common term P we will multiply ratios of P:Q with 9 and ratios of P:R with 11

Then we will have P :Q = 99 : 108 and P:R = 99 : 88

therefore P:Q:R = 99:108:88

and Q:R = 108 : 88

on simplification we will get Q:R = 27:22

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Answer 2

Answer:

The answer is a) 27:22 because

P,Q is equal to P,R then by cross multiplication you can find

Step-by-step explanation:

11/22=9/8

by cross multiplication you can do like this,

• $12 \times 9 \div 11 \times 8$
• by cross multiplication you will get 27:22
• Hope this may help you..