1.

If 7 is added to a number and the initial number is multiplied by 2, then the ratio of both quantities is 3 ∶ 4. Find the initial number.1. 102. 143. 154. 185. None of the above/More than one of the above

Answer» Correct Answer - Option 2 : 14

Given:

7 added to a number and initial number is multiplied by 2

Ratio of quantities = 3 ∶ 4

Calculation:

Let the initial number be x

7 is added to the number = (x + 7)

2 is multiplied to the number = 2x

Now, the ratio is 3 ∶ 4

∴ (x + 7)/2x = 3/4

⇒ 2x = 28

⇒ x = 14

∴ The initial number is 14


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