Multiple choice

The sum of five numbers is $555$. The average of first two numbers is $75$ and the third number is $115$. What is the average of the last two numbers?

  1. $145$
  2. $290$
  3. $265$
  4. $150$
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A Correct answer
Explanation

Sum of 5 numbers = 555. Sum of first two = 2 * 75 = 150. Third number = 115. Sum of last two = 555 - 150 - 115 = 290. Average of last two = 290 / 2 = 145.

AI explanation

The sum of the first two numbers is 2 times 75 = 150. The sum of the last two numbers is 555 minus 150 minus 115 = 290. The average of the last two numbers is 290 / 2 = 145.

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