Multiple choice

The average of the two numbers is 36. If the second number is three more than twice the first number, then what is the second number?

  1. 60

  2. 54

  3. 75

  4. 49
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the numbers be x and y. (x+y)/2 = 36 => x+y = 72. y = 2x + 3. Substituting: x + (2x + 3) = 72 => 3x = 69 => x = 23. Then y = 2(23) + 3 = 46 + 3 = 49.

AI explanation

Let the first number be x, which makes the second number 2x + 3. Since their average is 36, their sum is 2 multiplied by 36, giving 72. This creates the equation x + 2x + 3 = 72, which simplifies to 3x = 69 and x = 23. The second number is 2 multiplied by 23 plus 3, which equals 49.

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