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
(e) 32 : 33
(d) none of these
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Answer:
The answer is (b) 27:22 is correct
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