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Fourth-grade math car rental problem
Option 1:

130÷42=3 (vehicle) ... 4 people

Rent 3 buses and/kloc-0 minibuses,

2000× 3+1500×1= 7500 (yuan)

Option 2: Minimize vacancies.

Rent two buses and two minibuses.

2000×2+ 1500×2=7000 (yuan)

A: It is the most economical to rent two buses and two buses.