Question

The sum of five numbers is 260. The average of the first two numbers is 40 and the average of the last two numbers is 70. Determine the third number?

• A. 33
• B. 40
• C. 69
• D. 75

Answer 1

Answer:

B. 40

sum of first two numbers = 80 Average of last two numbers = 70 ⇒ sum of last two numbers = 140 Third number = 260 – 140 – 80 = 40