1. You live 10 miles from school. Your car holds 12 gallons of gas and gets 25 miles per gallon.

Question

a. Write an expression representing the number of miles you drive if you make t round trips from home to school and back.

 

b. How far could you drive on one tank of gas?

 

c. Write an equation that you could solve to determine the number of round trips from home to school and back that you could make on one tank of gas?

 

d. Solve the equation and write a sentence telling what you figured out.

 

e. If you only drive your car to and from school and you go to school five days a week, how often do you have to fill up your tank?

Answer 1

1. 10 miles from home to school. So a round trip could be 20 miles. t round trip = 20t miles.

2. 12 gallons on a tank. 25 miles per gallon. So with 25 gallon. you could drive= 12x25= 300miles. 

3. 20t=300. t is the number of round trip. a round trip takes 20 miles and with 1 tank of gas you could drive until 300 miles.

4. t=300:20=15 round trips. with a tank of gas you could drive 15 round trips from home to school.

5. per day, you drive 20 miles.and you go to school 5 days, so per week you drive 5x20=100 miles. with a tank of gas -300 miles. so after every 3 weeks, you need to fill up the tank.