When the tub was filled with 12 gallons of water, it was 80% full, calculated by dividing 12 gallons by the total capacity of 15 gallons and multiplying by 100%.
Step-by-step explanation:
To find what percent of the tub was full when filled with 12 gallons of water, we use the formula for percentage: (Part/Whole) × 100%. In this case, the part is 12 gallons, and the whole is the capacity of the tub, which is 15 gallons.
Let's perform the calculation:
Divide the part by the whole: 12 gallons / 15 gallons = 0.8.
Multiply by 100% to get the percentage: 0.8 × 100% = 80%.
Therefore, when the tub was filled with 12 gallons, it was 80% full.