# Mary has 23 marbles. 7/23 pf the marbles are yellow and 13/23 of the marbles are blue...?

Mary has 23 marbles. 7/23 pf the marbles are yellow and 13/23 of the marbles are blue. The rest of the marbles are green? Explain how you know

### 4 Answers

- Anonymous1 decade agoBest Answer
As marry has 23 marbles and it is easily shows that 7/23 means 7pf out of 23 are yellow. On the other hand 13/23 says that 13 pf of 23 are blue. So rest of the marbles are green. So,

23-(13+7) = 3 marbles are green.

Now if you say how do I know that that is green, It is the law of basic colors that if you mix up yellow and blue they will form green.

- crazydaveLv 71 decade ago
If there are 23 marbles, then 1 marble is 1/23 of the total. 7 marbles are yellow, 13 are blue.

7 + 13 = 20

That leaves 3 marbles that are green.

- 1 decade ago
try adding 7 and 13 and then subtracting from 23 you find how many marbles are left that haven't been designated as a color and that should be blue

Source(s): myself - 6 years ago
add three + thirteen and subtract it by 23 and you should get three.

Source(s): work it out >w<