Question

The weekly fee for staying at the pleasant Lake Campground is $20 per vehicle and $10 per person. Last year, weekly fees were paid for v vehicles and p persons. Which of the following expressions gives the total amount, in dollars, collected for weekly fees last year?

Answer 1

If it costs $20 per vehicle, and there were v vehicles, then the amount collected for all vehicles is 20v.
If it costs $10 per person, and there were p persons, then the amount collected for all persons is 10p.
Add those up and set it equal to the total amount of money collected. That'll be the expression.