Answer:
cups
Explanation:
Jacob mixes
cup of yellow paint for every
cup of blue paint to make green paint.
The ratio of yellow paint to blue paint =

= 5:3
cup of blue paint =
cup of yellow paint
1 cup of blue paint =
÷
cup of yellow paint
⇒
÷

⇒

Hence, For 1 cup of blue paint needed
cups of yellow paint.