a) 18 : 18 : 19
b) 19 : 19 : 18
c) 18 : 19 : 19
d) 18 : 19 : 18
Answer: b
Explanation:
P : Q : R
= (25 × 1 + 35 × 2) : (35 × 2 : 25 × 1) : (30 × 3)
= 95 : 95 : 90
= 19 : 19: 18
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