Question

A flea is very difficult for the human eye to see. Jose looks at a drawing of a flea in a book.
The drawing uses the scale 5:1.
The actual length of a flea is 2 mm. How long is the drawing?

Answer 1

five times two millimeters is ten millimeters which is one centimeter

Answer 2

Two millimeters is just a dot really, you would not be able to tell it was a flea very well. One centimeter is a size where you would see head and legs and stuff easily :)