Two numbers are ratio 3 : 4. On increasing each of them by 30, the ratio becomes 9 : 10. The sum of the numbers is:
Show answer & explanation
Correct answer: D
Explanation
Correct Answer is option 4 i.e. 35
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Understanding |
Application |
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Since the ratio of 2 numbers is 3 : 4, suppose the numbers are 3x and 4x. |
As per the question: (3x + 30)/(4x + 30) = 9/10 30x + 300 = 36x + 270 ⇒ 6x = 30 ⇒ x = 5 Hence, Sum of numbers = 7 × 5 = 35 |