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The rocket coaster has 15 cars, some that hold 4 people and some that hold 6 people. there is room for 72 people altogether. how many 4 passenger cars are there?

Respuesta :

jorel1380
Let m and n be 4-passenger and 6-passenger cars. Then:
m+n=15 and
4m+6n=72
Solve for m and n
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