Question 72

If P : Q = 5 : 6 and R : Q = 25 : 9, then what is the ratio of P : R?

Solution
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Given P : Q = 5 : 6 and Q : R  = 9 : 25
Multiplying P : Q with 3 and Q : R with 2
Then, P : Q = 15 : 18 and Q : R = 18 : 50
Hence, P : R = 15 : 50 = 3 : 10

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