Problems of the Week - September 6 to September 12

Rewards for Problems of the week:

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

Lower Elementary: 

Question: Charlotte and Chuck have tickets to a movie that starts at 7:30 pm. If it’s 6:42 pm now, then how much time do Charlotte and Chuck have to get to the movie theater before the show starts?

Upper Elementary: 

Question: Dillon wants to buy a model airplane that costs $34.00. She has a $5.00 bill and a 75% off coupon. How much more money does Dillon need to get the model airplane?

Middle School: 

Question: For the first 5 days of the week, Eddie put 3 photos on social media per day. How many does he need to post on the weekend to have an average of 5 photos posted per day for the whole week?

Algebra and Up: 

Question: A hardware store receives an order for 10 gallons of paint with 40% blue pigment. The hardware store already has mixtures of 20% blue pigment and 50% blue pigment. How many gallons of each can the hardware store reuse to mix 10 gallons of 40% blue pigment?

Challenge problem to take home. 5 stars for the correct answer. 

This trapezoid has an area of $$164$164$ square units. Its height is $$8$8$ units and the two non-parallel sides are $$10$10$ and $$17$17$ units.

What is the length of the shorter base in units?