Posted by joe on Wednesday, December 21, 2011 at 5:53pm.
72 tires are changed between a small and large truck over 8 weeks. The large truck has 3 times as many tires as the small truck. How many tires does the small truck have?

math  Ms. Sue, Wednesday, December 21, 2011 at 6:04pm
x + 3x = 72
4x = 72
x = 18