A state map shows that the ratio of map distances to actual distances is 2cm to 7km . Use this scale to determine how many times greater the actual distances are than what's seen on the map.

a. 3.5
b. 35
c. 350
d. 350,000

Question

A state map shows that the ratio of map distances to actual distances is 2cm to 7km . Use this scale to determine how many times greater the actual distances are than what's seen on the map. 

a. 3.5
b. 35
c. 350
d. 350,000

anonymous · Answer

like UnkleRhaukus mentioned, we would have to set both values to a common unit.  I worked with Centimeters since that came to my head first.

100cm=1m
1000m=7m
so 700,000cm=7m

the ratio is 2cm:7m
or
2cm:700,000cm

then just divide both sides by 2 to find out what the scale is.

scale is 1:350,000

callisto · Answer

Just some amendment to the above solution.

100cm=1m
1000m=1km
so 700,000cm=7km

the ratio is 2cm:7km
or
2cm:700,000cm

anonymous · Answer

yes, thanks for the correction.