PSAT Math Grid-Ins Question 96: Answer and Explanation

Question: 96

Jayesh is a 150-pound, 5-foot-10-inch, 18-year-old male, and he requires 2,048 calories per day to maintain his weight when he doesn't exercise. When he plays basketball, he burns 231 additional calories per hour. Assuming he wants to maintain his current weight, how many more calories per day does he require if he plays basketball for four hours instead of two hours?

Correct Answer: 462

Explanation:

462

Difficulty: Medium

Category: Describing Real-Life Situations with Functions

Getting to the Answer: Questions sometimes include extra information that you don't need to get the answer. For this question, all you need to consider is the difference in calories between playing basketball for 4 hours and playing basketball for 2 hours. Since that activity burns 231 calories per hour, the difference is 2 × 231 = 462. Grid in 462.