Final answer:
To make 1 cup of strawberry lemonade, Wyatt uses 1/5 cup of strawberry juice when mixed with 4/5 cup of lemonade as per the given ratio.
Step-by-step explanation:
The question asks how many cups of strawberry juice Wyatt uses for 1 cup of lemonade when the given ratio is 1/5 cup of strawberry juice to 4/5 cup of lemonade. To find the amount of strawberry juice per 1 cup of lemonade, we need to set up a proportion based on the given ratio.
Since we want to find the amount of strawberry juice for 1 full cup (4/5 cup + 1/5 cup of strawberry juice), we add 1/5 cup of strawberry juice to 4/5 cup of lemonade to make a total of 1 cup of strawberry lemonade mixture. Therefore, to make 1 cup of strawberry lemonade, Wyatt uses 1/5 cup of strawberry juice.