# Problems of the Week

Feb 3, 2020 | High Park

Hey there Mathletes! Can you solves these cat-themed puzzle purr-fectly?

Lower Elementary:
Question: Each of 10 cats has 10 kittens. Each of the kittens has 10 whiskers. How many kitten whiskers are there?

Upper Elementary:
Question: Jessica has three cats. One is black, one is gray, and one is white. The white cat is not the oldest. The gray cat is older than the black cat. The black cat is younger than the white cat. Put Jessica’s cats in order from youngest to oldest.

Middle School:
Question: The cost per day of Kitty Kare cat sitters is \$20 plus \$8 per cat. Furbaby Sitters charge \$25 and \$4 per cat. Scott is going out of town for two days and needs a sitter for his three cats. How much money does Scott save by choosing Furbaby Sitters instead of Kitty Kare?

Algebra and Up:
Question: A cat starts chasing a mouse from 10 meters away. The cat runs at a rate of 14 meters per second, and the mouse scampers at a rate of 4 meters per second. How many seconds will it take the cat to catch the mouse?

...

Lower Elementary:
Question: Each of 10 cats has 10 kittens. Each of the kittens has 10 whiskers. How many kitten whiskers are there?
Solution: If each of the 10 cats has 10 kittens, then there are 10 × 10 = 100 kittens. If each kitten has 10 whiskers, then there are 100 × 10 = 1,000 whiskers.

Upper Elementary:
Question: Jessica has three cats. One is black, one is gray, and one is white. The white cat is not the oldest. The gray cat is older than the black cat. The black cat is younger than the white cat. Put Jessica’s cats in order from youngest to oldest.