A map is given with a scale of 2 cm =1,000 km. What is the actual distance between the two places in km, if the distance in the map is 2.5 cm?
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Solution
Let the actual distance between the two places be x km.
Then, by using the concept of proportion,
we get 1000:x=2:2.5 ⇒1000x=22.5 ⇒1000×2.5=2×x
So, x=1,250 km