Problems of the Week - November 29 to December 5

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: Lucas had 24 stamps. He sent 4 cards with 2 stamps each. How many stamps does Lucas have left?

Upper Elementary:

Question: 37.5% of students at Lakeside Elementary School bring their lunch from home instead of buying lunch from the cafeteria. If all of the students at Lakeside Elementary either buy lunch at the cafeteria or bring lunch from home, then what percentage of students at Lakeside Elementary do not bring their lunch from home?

Middle School:

Question: Jamie has a number of vegetables in a basket. The ratio of onions to tomatoes in the basket is 2:5, and the ratio of tomatoes to carrots in the basket is 4:3. If there are 15 carrots in the basket, then how many onions are there?

Algebra and Up:

Question: Finley uses 37 arcade tokens to play a racing game 5 times and a puzzle game 3 times. Phoebe uses 18 tokens to play each game twice. How many tokens does it take to play the racing game?

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

What comes next in the  following pattern sequence?