Answer:
45 gallons of gas is used for 15 hours.
Step-by-step explanation:
As given
Every hour of driving uses up to 3 gallons of gas.
i.e
1 hour = 3 gallons of gas.
Now calculated gallons of gas used for 15 hours .
Gallons of gas used for 15 hours = 15 × Gallons of gas used for 1 hours.
Putting the values in the above
Gallons of gas used for 15 hours = 15 × 3
= 45
Therefore the 45 gallons of gas is used for 15 hours.
