Answer:
36 marbles are not blue
Step-by-step explanation:
Given Tom's ratio of 5 blue marbles out of 20 total marbles:
[tex]\frac{blue}{total}=\frac{5}{20}=\frac{1}{4}[/tex]
Since Tom and Jasper have the same ratio/percentage of blue marbles, we can first find the total amount of marbles that Jasper has:
[tex]\frac{12}{x}=\frac{1}{4}[/tex]
Cross-multiply: x = 12(4) or x = 48
If Jasper has 48 total marbles and 12 are blue, the amount of marbles that are not blue:
48 - 12 = 36 marbles
