Answer:
30, 90
Step-by-step explanation:
To find the unit rate divide:
50 ÷ 20 = 2.5
The unit rate is 1:2.5, which means for every minute, Jill can answer two and a half math problems. We can use this to find the other proportions.
12 × 2.5 = 30
36 × 2.5 = 90
This means the chart should look like this:
20 : 50
12 : 30
36 : 90
If we assume that the amount of questions get done each minute is constant, then we can assume that every minute she gets 2.5 questions done every minute as:
50/20= 2.5
So 2.5 x 12 is 30
and
2.5 x 36 is 90
