The average of five numbers is 18. What is their sum?
- A. 72
- B. 80
- C. 90
- D. 95
Explanation
Average = sum ÷ count, so sum = average × count = 18 × 5 = 90. Rearranging this single relation solves nearly every averages question in aptitude papers.
Explanation
Average = sum ÷ count, so sum = average × count = 18 × 5 = 90. Rearranging this single relation solves nearly every averages question in aptitude papers.