Question

1. abdullah and kanna are working on this problem:

a juice box has 20% more juice in its new packaging. the original packaging held 12 fluid ounces. how many fluid ounces of juice does the new packaging hold?
abdullah’s double number line
kanna’s double number line
whose double number line represents the problem? explain your thinking.
problems 2–3: read each scenario and then answer the question. complete the double number line if it helps with your thinking.

1. a dog weighs 20% more than it did three months ago. it weighs 36 pounds now. how much did the dog weigh three months ago?

weight of dog (lb)
% of weight

1. a bakery used 25% less butter this month than last month. the bakery used 240 kilograms of butter this month. how much did it use last month?

Explanation:

Step1: Solve Problem 1

Original juice = 12 fl oz, 20% more = 12×1.2=14.4 fl oz. Abdullah’s line marks 12 (100%) and 14.4 (120%), matching.

Step2: Solve Problem 2

Let past weight = $x$. 120% of $x$ = 36 → $x=36÷1.2=30$ lb.

Step3: Solve Problem 3

Let last month’s butter = $y$. 75% of $y$ = 240 → $y=240÷0.75=320$ kg.

Answer:

1. Abdullah’s Double Number Line
2. 30 pounds
3. 320 kilograms