Carrie and Krystal are taking a road trip from Greenville to

Carrie and Krystal are taking a road trip from Greenville to North Valley. Each person has her own map, and the scales on the maps are different.

a) On Carlie map scale factor is

1 \" ~20 miles

Hence 4.5\" ~ 90 miles

Distance from Greenville to North valley = 90 miles

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In Krystal map scale factor is

1\" ~ 18 miles

Hence for 90 miles distance shown will be 90/18 = 5 inches