Start this week the right way - by successfully solving one of our problems of the week. Can you solve all four?

**Lower Elementary:**

*Question: *Stacy has tickets to a concert that starts at 8:30 PM. If it’s currently 7:42 PM, then how much time does Stacy have to get to the concert before it starts?

**Upper Elementary:**

*Question: *Maggie wants to buy a puzzle that costs $25. She has a 50% off coupon and $10. How much more money does Maggie need to get the puzzle?

**Middle School:**

*Question: *A red token is worth twice as much as an orange token. An orange token is worth 5 less a yellow token. A yellow token is worth 15 less than a green token. A green token is worth half as much as a blue token, and a blue token is worth B. How much is a yellow token worth in terms of B?

**Algebra and Up:**

*Question: *The formula for the temperature in Fahrenheit (F) in terms of the temperature in Celsius (C) is: F = ^{9C}/_{5} + 32

What is the formula for the temperature in Celsius in terms of the temperature in Fahrenheit?

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**Answers**