Four numbers in the ratio 1:3:4:7 add up to give a sum of 105, find the value of second biggest number. A. 63 B. 42 C. 35 D. 28
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Answer:
21
Explanation:
1:3:4:7
Let, x+3x+4x+7x=105
or, 15x=105
or, x=105/15
=7
second number is =(7×3)
=21
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