Problem of the Week - Upper Elementary - Dec. 13, 2020 to Dec. 19, 2020

Upper Elementary: 

Question: Gasoline costs $1.45 per gallon. If a car's gas tank holds 15 gallons in total and is only 1/5 full right now, then how much will it cost to fill up the tank? 

Answer: $17.40

Solution: If the gas tank is 1/5 full, then it will need 4/5 x 15 = 12 gallons of gas to fill it. The 12 gallons of gas it takes to fill the tank costs $1.45 x 12 = $17.40