8/10 > 3/4 > -3/4 > -7/10
Ratio:
Red : Total
2 : 5
(x2) (x2)
4 : 10
Green : Total
3 : 10
Total of red and green marbles = 4 + 3 = 7
Blue marbles = 10 - 7 = 3
10 parts = 40 marbles
1 part = 40 ÷ 10 = 4
3 parts = 4 x 3 = 12
Answer: There are 12 blue marbles.
3 6 7 4
+ 6 7 8 9
~~~~~~~
10 4 6 3
Divide 128 by 16 to get how many balloons will go on each post.
128 ÷ 16 = 8
8 balloons per post :)
After 4 hours there will be 64 000
3 - 32k
2-16
1-8
do you need exactly 50 000?
