The sum of three numbers is 172 . If the ratio between the first and second be 3 : 4 and that of between the second and third be 5 : 2, then find the second number.
Answer & explanation
Correct answer: option 3
I : II : III : Total
3 : 4
5 : 2
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15 : 20 : 8 : 43
43R = 172
1R = 4
20R = 20 × 4 = 80
Hence , second number = 80