Simplify this map scale 1cm:5km

This problem belongs to comparing quantities.

we have 1 cm : 5km

we have different units in our ratio so we need to convert km as cm so we can have same units here.

we know that

1 km = 1000m

5km=5000m

100cm=1m

5000m=500000cm

1cm:500000cm = 1:500000 units will be cancels as we have same unit on to and bottom

1:500000=0.000002 this is the simplified form of given ratio