Question

read the problem.
carla spent a total of 50 minutes making a loaf of banana bread. she spent 20% of the time preparing the ingredients. how many minutes did it take carla to prepare the ingredients?
pick the model that represents the problem.
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
0 ? 50
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
0 50 ?
how many minutes did it take carla to prepare the ingredients?
□ minutes

Explanation:

Step1: Identify total time and percentage

Total time = 50 minutes, target percentage = 20% = 0.2

Step2: Calculate ingredient prep time

Multiply total time by percentage: $50 \times 0.2$

Step3: Select correct model

Top model: total (50) at 100%, unknown at 20% (matches problem)

Answer:

Correct model: The top bar graph (0 to 50, unknown at 20%)
10 minutes