1 a. 
The ratio of girls to boys in a a swimming club was 4 : 2. There were 36 girls. How many boys were there in the club?


2 a. 
A bag contains 90 marbles, some red and some green.
The ratio of red marbles to green ones is 4 : 5. How many green marbles are there?


3 a. 
A bag contains 90 marbles, some red and some white.
The ratio of red marbles to white ones is 1 : 4. How many red marbles are there?


4 a. 
In a cookie mix, we find oatmeal cookies, walnut cookies, and nobake cookies in a ratio of 4 : 3 : 4. If a bag of the mix contains 36 walnut cookies, how many cookies in total are there?


5 a. 
Ava and Aiden share a reward of $72 in a ratio of 1 : 5. How much does Ava get?

