📅 NSB Round Robin 2009🎓 HS🔄 Round 5#️⃣ Question 4🌟 BONUS✍️ Short Answer
It takes 20 minutes for Janis to prepare lunch. When Kristen helps, it only takes 12 minutes. How many minutes would it take Kristen to prepare the same lunch if she worked alone?
✔️Answer:30
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