Answer:
The answer to your question is 86 gallons
Explanation:
Data
distance 1 = 272 mi
gas 1 = 68 gallons
distance 2 = 344 mi
gas 2 = ?
Process
To solve this problem use proportions and cross multiplication.
272 mi ----------------- 68 gal
344 mi ---------------- x
x = (344 x 68) / 272
x = 23392 / 272
x = 86 gal
Conclusion
To travel 344 mi a boat needs 86 gallons of gas.