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The ratio between two numbers is 3:4 and their sum is 420. The greater of two number is?

175
200
240
315

Correct Answer: 240

Explanation:

Let the number be 3N and 4N.
Then, 3N + 4N = 420
⇒ 7N = 420
⇒ N = 60
∴ Greater number = 4 x 60 = 240

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