Answer:Here's how to solve the problem: 1. Find the cost per gallon: - Divide the total cost by the number of gallons: 300 pesos / 6 gallons = 50 pesos/gallon 2. Calculate the cost for an 11-gallon tank: - Multiply the cost per gallon by the number of gallons in the larger tank: 50 pesos/gallon * 11 gallons = 550 pesos Answer: It would cost 550 pesos to fill an 11-gallon tank.