Multiple choice

The total of three numbers is 240. The second number is four times the first number. The third number is three times the first number. What will be the average of the three numbers and what is the third number?

  1. $80, 90$
  2. $70, 120$
  3. $50, 30$
  4. $60, 120$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let the first number be x. Then second = 4x, third = 3x. Sum: x + 4x + 3x = 240, so 8x = 240, giving x = 30. The numbers are 30, 120, 90. Average = 240/3 = 80, and third number = 90. Option A matches both values correctly.

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