Answer:
12 L 500 mL
Explanation:
First, multiply the two types of bottles separately.
5 × 400 = 2000 mL
7 × 1.5 = 10.5 L
You can convert the volume of the first from milliliters to liters. There are 1000 milliliters in 1 liter. In the second volume, you can convert the decimal to milliters.
2000 mL = 2 L
0.5 L = 500 mL
Add all of the numbers together.
10 L + 2 L + 500 mL = 12 L 500 mL
Tony purchased 12 L and 500 mL of water.