Final answer:
A ten-minute shower uses 150 liters of water, saving more water than a bath, which averages 250 liters. Kellie does not have enough paint for three coats as she needs 2.25 liters but only has 2 liters.
Step-by-step explanation:
Water Usage in Bath vs. Shower
When we consider whether a ten-minute shower saves more water than taking a bath, we calculate the volume of water used in each scenario. A bath averages 250 liters of water. A shower uses 15 liters of water per minute. Therefore, a ten-minute shower would use 15 liters/minute × 10 minutes = 150 liters of water. Comparing the two, 150 liters for a shower is less than 250 liters for a bath, so a ten-minute shower would indeed save more water than a bath. The correct answer is a) yes.
Paint Usage for Multiple Coats
Kellie started with 2 liters of paint and used 750 milliliters (or 0.75 liters) for the first coat. If each coat uses the same amount of paint, three coats would require 0.75 liters × 3 = 2.25 liters of paint. Since Kellie only has 2 liters, she would not have enough paint for three coats. The correct answer is b) no.