Problems of the Week - February 8 to February 13

Rewards for Problems of the week:

5 points for the correct answer at your level; 10 points for the next level; 20 points each for 2+ levels up.

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?

Challenge problem to take home. 20 points for the correct answer. 

If every letter corresponds to a different digit and E = 5, what is Y?