In the jar, there are 7 blue marbles, 11 red marbles, and some yellow marbles. If the chance of randomly picking a yellow marble is 1/4, how many yellow marbles are there? Let's think step by step and output the final answer after "####".
user
Let y be the number of yellow marbles
There are 11+7+y=18+y total marbles.
y/(18+y)=1/4.
4y=18+y
3y=18
y=6
There are 6 yellow marbles.
#### 6
In the jar, there are 7 blue marbles, 11 red marbles, and some yellow marbles. If the chance of randomly picking a yellow marble is 1/4, how many yellow marbles are there?
train