Question

Cities A and B are at a distance of 20,000 km. If, a map is drawn to a scale of 1 cm : 250 km, then, on the map, the two cities are _____ cm apart. (2 marks)

Answer 1

Scale of map = 1 cm : 250 km
i.e, 1 cm on map = 250 km

Let the distance between the cities on the map be c cm.

So, 1 : 250 = c : 20,000 (1 mark)

$\because$Product of the means = product of the extremes

$c=\frac{20,000}{250}=80cm$ (1 mark)