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Ratio and Proportion
What must be added to each term of the ratio 7 : 13 so that the ratio becomes 2 : 3?
1
2
3
5
Correct Answer:
5
Explanation:
∵ (7 + N) / (13 + N) = 2/3
⇒ 3(7 +N) = 2(13 + N)
∴ N = 5
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