Question

Mia is filling her gas tank with gasoline

that costs $3.25 per gallon. If she puts
4.2 gallons of gasoline into the tank, how
much will she pay? Show your work.​

Answer 1

Answer: $13.65

Step-by-step explanation:

This problem can be solved by the Rule of three, a mathematical rule to find out an amount that is with another quantity given in the same relation as other two also known:

If:

1 gallon ----- $3.25

4.2 gallons ----- ?

Then:

`?=((4.2 gallons)($3.25))/(1 gallon)`

`?=$13.65` This is the amount of money Mia will pay for filling the tank with 4.2 gallons