Tunnel Toll: The price you pay to drive your car or truck through a tunnel.
What do I know? What do I need to know? Hint: Use multiples and see which multiple of $1.25 added to a multiple of $2.00 equals $40.00. This should give you the number of each type of car and remember that the two totals for each must add up to 23.
Enrichment - This video explains the same concept as the one above, especially after the 5 minute and 30 second mark. Mr. Math Antics takes things further and starts talking about the volume of a sphere which is not something that we need to concern ourselves with in today's lesson, but that you might find interesting anyway.
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