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Of the three numbers whose average is 60, the first is one fourth of the sum of the others. The first number is :
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- 30
- 36
- 42
- 45
- 30
Correct Option: B
Let three numbers are p , q and r .
Here , Average of three numbers = 60
⇒ p + p + r = 60 × 3 = 180
According to question ,
| p = | q + r | |
| 4 |
⇒ 4p = q + r
⇒ 5p = 180,
∴ p = 36
