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

Sagot :

Answer:

26 gallons

Step-by-step explanation:

7/10 - 1/5 = 7/10 - 2/10 = 5/10 = 1/2

1/2x = 13

x = 26