Problems of the week- June 22 to June 26

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: Laura has a heart-shaped necklace charm that breaks into two pieces. If the whole charm weighs 5¹/₂ grams and one of the pieces weighs 2¹/₂ grams, then how much does the other piece weigh?

 

Upper Elementary:
Question: Benjamin and Jerry shared a brie and butter baguette for dinner. Benjamin ate ³/₁₀ of the baguette, and Jerry ate ²/₅ of it. The uneaten part of the baguette weighs 4¹/₂ ounces. How many ounces of the baguette did Jerry eat?
 

Middle School:
Question: Dale orders a cup of coffee that costs $1.50 and a slice of cherry pie that costs $2.50 at the Double R Diner. If the sales tax is 6.5% and Dale tips $1.00, then how much money does he spend at the diner in total?
 

Algebra and Up:
Question: A large circular saw at the Packard Sawmill has a radius of 3 feet. The edge of the saw’s blade strikes the milled trees at a rate of 9,000 feet per minute. What is the rate at which the saw rotates in radians per minute?
 

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

Find the answer of this expression: