可汗SAT数学练习题：Systems of linear inequalities word problems【8】
可汗SAT数学练习题：Systems of linear inequalities word
下面智课网为大家整理了关于Systems of linear inequalities word problems的可汗SAT数学练习题，大家可以做下练习。
31.Rodolfo wants to determine how best to benefit from his weekly workouts. His goal is to burn at least 3300 calories per week from jogging and playing soccer. He can burn 700 calories each hour he spends jogging and 600 calories each hour he spends playing soccer. If Rodolfo's schedule permits him to spend at most 3 hours per week playing soccer and at most 5 total hours per week exercising, which of the following exercise schedules will allow him to meet his weekly goal?
A. 4 hours playing soccer and 1 hour jogging
B. 1 hour playing soccer and 5 hours jogging
C. 3 hours playing soccer and 2 hours jogging
D. 2 hours playing soccer and 3 hours jogging
CORRECT ANSWER: D DIFFICULTY LEVEL: 3
32.Roberto plans to start a new job. In preparation, he decides that he should spend no more than 30 hours per week on the job and homework combined. If Roberto wants to have at least 2 homework hours for every 1 hour at his job, what is the maximum number of hours that he should spend at his job each week?
A. 9 hours
B. 10 hours
C. 20 hours
D. 21 hours
CORRECT ANSWER: B DIFFICULTY LEVEL: 3
35.A tennis club is organizing group lessons. The club supplies 40 new balls for each player which cost $1 each. Each player pays $300 for the lessons. The club must pay each instructor $1,000 for conducting the lessons, and there must be at least 1 instructor for every 6 players. Which amount of players and instructors meets these requirements and still gives the club a net profit?
A. 6 players and 2 instructors
B. 10 players and 3 instructors
C. 13 players and 2 instructors
D. 16 players and 3 instructors
CORRECT ANSWER: D DIFFICULTY LEVEL: 4