Josh's gas tank is 1/5 full. After buying 7 gallons it is 7/10 full. How many gallons can his gas tank hold?

Answer 1

7 gallons = 7/10 tank - 2/10 tank

7 gallons = 5/10 tank = 1/2 tank

14 gallons = whole tank

Answer 2

14

Answer 3

Josh's gas tank is 1/5 full. After he buys 13 gallons of gas, it is 7/10 full. How many gallons can Josh tank hold?