Section: Mathematics Usage

30) Peter's weight is 12 pounds more than twice Susan's weight. Find Peter's weight if together they weigh 150 pounds.

84 pounds
104 pounds
121 pounds
152 pounds
This cannot be determined from the information provided.

Explanation

Let x = Susan's weight. Then 2x + 12 = Peter's weight. Therefore x + 2x + 12 = 150 pounds. Thus 3x = 138, so x = 46. Now multiply x * 2 and add 12 to receive 104 pounds.