Problems of the Week - June 1 to June 5

Rewards for Problems of the week:

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

Lower Elementary:

Question: Perry has $20.00. He spends $2.75 on breakfast, $10.00 on lunch, and $6.45 on dinner. How much money does he have left?

Upper Elementary:  

Question: Joseph owns and runs a bakery. He makes 10 batches of cookies. Each batch yields 18 cookies. If he sells the cookies in boxes of a dozen, how many boxes can he fill?

 Middle School:

Question: It takes Cameron 2 minutes to make a ham sandwich. It takes Morgan 3 minutes to make a ham sandwich. If they work together, how many ham sandwiches can they make in an hour?

 Algebra and Up:

Question: Table A orders two steaks and one salad. Table B orders three steaks and four salads.  If Table A’s bill is $53 and Table B’s bill is $112, what is the cost of one steak and one salad?

Challenge problem to take home. 10 stars for the correct answer. 

+\red{R}+\yellow{E}?

What is the minimum number of colors required to fill the regions of this graph so that no two adjacent (sharing the same border) regions are the same color?