Question

Michael is driving from san diego to san Francisco a distance of 822km.He is using a map with a scale of 1cm=200km. what distance on the map represents the distance between the two cities

Answer 1

`(1 \: cm)/(200 \: km) = (n \: cm)/(822 \: km) \\ 822 \: kmcm = 200n \: kmcm \\ n = (822 \: kmcm)/(200 \: kmcm) \\ n = 4.11`
The answer is 4.11 cm. It's just a matter of ratio and proportion.