Shawn gets an allowance of $5 every other Sunday for doing chores. He likes to stop on his way home from school and buy a healthy snack. His favorite treat costs $0.65.

How many of these snacks can Shawn afford every two weeks?
After buying as many of these snacks with his $5 as possible, Shawn puts his left over allowance in his piggy bank. He is saving to buy a new calculator. The model he wants costs $8.95. (It performs integer division and operations with fractions!)

How many weeks will it take him to save enough for the calculator?
[Hint: Try estimating the answer before calculating it, so you will know if your answer is reasonable.]

Be sure to explain how you solved the problem and how you know you are right.

Answer:

Shawn can afford to buy 7 snacks in every two-week allowance cycle.

Shawn will have the money he needs for the calculator after he is given his allowance in the 39th week.

If your answer doesn't match ours,

did you remember that he gets an allowance every two weeks?
did you assume that he gets a snack only on school days, and that he goes to school five days a week? (He does!)
did you think about how to round numbers in this problem?