To find out the unit rate
Divide the number of teaspoons by the total cups
so
![4\colon(2)/(3)=(4*3)/(2)=6\text{ teaspoons per cup}](https://img.qammunity.org/2023/formulas/mathematics/college/6ijj905e3trcclhu5r20asy3a9efvxuxlw.png)
If the question asks for teaspoons per cup
then
you divide the number of teaspoons by the total cups
4: 2/3=6 teaspoons per cup
If the question asks for cups per teaspoon
then
you divide the number of cups by the number of teaspoons
so
2/3:4=2/12=1/6 cups per teaspoonon