The length of a rectangle is 7 inches and the width is 2 inches. what is the ratio, using whole numbers, of the length to the width?

Ratios are basically fractions and whatever they say first is the numerator (length in this case) and the second one is the denominator (width in this case) 
Now just put them over each other and then get 
Now just multiply each one by 4/11 to make the denominator 1 and get 60/22
Simplify and get 30/11
Thats your answer, 30/11 OR 30:11

The answer is 1532.75