Ratios & Proportions

Understanding ratiosA ratio is a comparison of two numbers. What is the ratio of tulips to cacti?
There are 3 ways to write a ratio: 2 to 3, , or 2:3 What is the ratio of pens to pencils?
The ratio of two numbers a and b is the quotient
Sussan has a bag with 3 pens, 4 pencils, 7 felt tip pens, and 1 pencil sharpener.
What is the ratio of pencils to pens?
In the 2009 Nathan's Hot Dog eating contest, Joey Chestnut ate 68 hotdogs in 10 minutes. Find how many hog dog per minute this is. 