Meg mixed 1 part of strawberry juice and 3 parts lemon juice to make lemonade . How many parts of strawberry juice did Meg mix with each part of lemon juice?

Meg mixed 1/3 part of strawberry juice with each part of lemon juice.

Sounds like she's also only making one serving so I'm going with 1/3. Apologies if my answer is for some reason wrong. Hope I was able to help!