Question #a4ba6

2 Answers
Mar 23, 2017

=58 cm

Explanation:

3/120times2320

=2320/40

=58

Mar 23, 2017

58 cm on the map.

Explanation:

Scale questions can be calculated using direct proportion, because they always involve a comparison between two quantities.

Make sure that if the units are different, they match.
(either left and right side, or top and bottom)

Scale: 3cm : 120 "miles"

We are given miles, but we want the cm distance on the map.

"map distance" and " actual distance"
color(white)(.............)darrcolor(white)(...........)darr
color(white)(.............)(3 cm)/(x cm) = (120 " miles")/(2320" miles")" " cross multiply.
color(white)(.............)uarrcolor(white)(...........)uarr
"map distance" and " actual distance"

120x = 3 xx2320

x = (3 xx2320)/120

x = 58 cm
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You can also find out how many miles 1cm represents.

3cm represents 120 miles
1cm represents 40 miles

So if you divide the actual length by 40 you will find the number of cm

2320/40 = 58cm