Question

1) The ratio 20 minutes to 1hour can be written 1:n. What is the value of n.

2) The scale on a map is 1:25000 how many kilometres on the ground is represented by 9 cm on the map?.

Answer 1

n=3 x=225,000km

Explanation:

1hour=60mins

20:60

1:3

n=3

1/25000=9/x

x=9×25000

x=225,000km

hope it helps:)