Answer:

Step-by-step explanation:
Answer:
There will be 4 blue marbles
Step-by-step explanation:
Yellow to blue marbles is in a ratio of:
5:10
the representative sample is:
2:x
simplee cross multiplication can be aplied
5x = 2*10
5x = 20
divide both sides by 5
x = 4
there should be four blue marbles
Answer:
$
Step-by-step explanation:
÷
= 

Hope this helps
Answer:
It is 20
Step-by-step explanation:
1+1= 2*20=40
40/2=20
Answer:
7 ÷ 4
Step-by-step explanation:
Another example would be:
12/3 = 12 ÷ 3
The number at the front will be the numerator while the second number will be the denominator