Question

The gas tank in ms.wades car holds 20gallons. she has 5 gallons of gas remaining in the tank. if she purchases gas fpr $2.90 per gallon, how much will she pay to fill the tank?
think, 10 gallons would cost__________

5 gallons would cost___________

so,15 gallons would cost________

Answer 1

For 10 gallons 2.90×10=$29
for 5gallons 2.90×5=$14.50

Answer 2

Each gallon costs $0.58 so 5 gallons would cost $2.90 and 10 gallons would cost $29.00 so 15 gallons would cost $43.50  

Just multiply each of them by $2.90