Question

Two towns that are 31.5 km apart are 3 cm apart on a map. What is the scale of the map?

1 cm = 9.5 km
2 cm = 21 km
2 cm = 18 km
1 cm = 29.5 km​

Answer 1

2 cm = 21 km

Explanation:

2 cm = 21 km

This is why

3cm = 31.5 km

3/3 = 31.5/3 (To find out how much 1 cm is equal to)

1 cm = 10.5 km

And since 1 cm = 10.5 km is not there in the options... I tried to find out for 2 cm

So, I multiplied both sides by 2

1 cm = 10.5 km

1 *2 = 10.5 *2

So the answer become 2 cm = 21 km