Practicing Success
Practicing Success
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Three positive numbers are in the ratio 2 : 3 : 4. The sum of their squares is 2349 . The average of the first two numbers is: |
36 27.5 18 22.5 |
22.5 |
Lets assume numbers are 2x, 3x, and 4x As per question 27x² = 2349 x² = 87 x ≅ 9 Avg. of first two numbers =\(\frac{ (2 × 9 + 3 × 9)}{2}\) = 22.5 |
