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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 |
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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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