Ziad is 30 and marc is 10
Answer:

Step-by-step explanation:



Answer:
10/15 or 2/3
Step-by-step explanation:
15 marbles and if you add 6 red and 4 white that is 10 out of 15 marbles
Answer:
24 ÷ 4
Step-by-step explanation:
Putting something into fourths is putting into 4 parts. If you divide 24 by 4 you get 6. 6 equals 1/4 of 24. To check your work add 6 together 4 times.
I think it's 21/100 because I found the common denominator by multiplying by ten so I multiplied 1 times ten to get 10. Does that help?