SOLUTION: A town map has a scale of 1:45,000. a). A street in this town is 850 m long. How long is that street on this map? Round to the nearest tenth. b). How long, in reality, is a

Algebra ->  Proportions  -> Lessons -> SOLUTION: A town map has a scale of 1:45,000. a). A street in this town is 850 m long. How long is that street on this map? Round to the nearest tenth. b). How long, in reality, is a      Log On


   



Question 1133626: A town map has a scale of 1:45,000.
a). A street in this town is 850 m long. How long is that street on this map? Round to the nearest tenth.
b). How long, in reality, is a road that measures 5.4 cm on the map?

Thank you!

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

A town map has a scale of 1%3A45000. =>1143
a). A street in this town is 850m long. How long is that street on this map? Round to the nearest tenth.
distance on the map is measured in cm
850m=85000cm
85000cm%281%2F45000%29=1.889+cm
85000cm%281%2F45000%29=1.9+cm
Distance on the map: 1.9cm

b). How long, in reality, is a road that measures 5.4cm on the map?
x%281%2F45000%29=5.4+cm
x=45000%2A5.4+cm
x=243000+cm....convert to meters
x=%28243000%2F100%29+m
x=2430m
a road that measures 5.4cm on the map, in reality is 2430m long