Question

The sum of three numbers is 108 and their ratio is 3 : 2 : 4. Find the sum of first and second number.
1. 20
2. 40
3. 50
4. 60

Answer 1

Correct Answer - Option 4 : 60

Given:

Ratio = 3 : 2 : 4

Sum = 108

Calculation:

Let numbers be 3x, 2x and 4x

⇒ 3x + 2x + 4x =108

⇒ 9x = 108

⇒ x = 12

⇒ 3x = 36, 2x = 24

⇒ 36 + 24 = 60

∴ Summation of first two numbers is 60

Alternate method

Considering ratios into units

⇒ 3 + 2 + 4 = 9 units

⇒ 9 units = 108

⇒ 1 unit = 12

⇒ 3 + 2 = 5 units

⇒ 5 units = 60

∴ required answer is 60