Question

Can someone pls explain this to me

Answer 1

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

Answer 2

30, 90

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