In a group of 40 Grade 7 students, 22 had ridden in a family-owned vehicle, 23 had taken a public utility vehicle and 10 had walked to school; 8 had ridden a familyowned vehicle and public utility vehicle, 7 had taken a public utility vehicle and had walked to school, and 4 had ridden a family-owned vehicle and had walked to school; and 2 had taken all 3 modes of transportation in going to school.

__ 18. How many students commuted to school only?
_______ 19. How many students walked to school only?
_______ 20. How many students did not use any of the three modes of transportation?
_______ 21. How many students rode on a family vehicle only?
_______ 22. How many students did not ride on a family vehicle?
_______ 23. How many students did not walk to school?
_______ 24. How many students did not commute to school?
_______ 25. How many students used all three modes of transportation?
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