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If the difference between 3/4 and 4/7 of a number is 100, then the number is
1. 520
2. 500
3. 560
4. 540

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Correct Answer - Option 3 : 560

Given:

The difference between 3/4 and 4/7 of a number = 100

Calculation:

Let the number is 'n'.

3n/4 - 4n/7 = 100 

⇒ (21n - 16n)/28 = 100

⇒ 5n = 2800

⇒ n = 560 

∴ The required number is 560.

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