SAT Math Multiple Choice Practice Question 22: Answer and Explanation
22. In a certain game, there are only two ways to score points; one way is worth 3 points, and the other is worth 5 points. If Tamsin's total score is 61, which of the following could be the number of 3-point scores that Tamsin had?
Correct Answer: C
C. If you multiply each of the choices by 3 points, you get 30, 33, 36, 39, and 42. Because all the other scores are worth 5 points, you must be able to add a multiple of 5 to one of these numbers to get 61. The only one that works is 36 because 36 + 25 = 61.