If 2 cm represent 3 / 4 km then:
multiply 2 cm and 3 / 4 km by 4 / 3
2 ∙ 4 / 3 cm represent 3 / 4 ∙ 4 / 3 km
8 / 3 cm represent 1 km
Now:
the length on a scale:
30 km
30 ∙ 8 / 3 = 240 / 3 = 80 cm
75 km
75 ∙ 8 / 3 = 6000 / 3 = 200 cm
84 km
84 ∙ 8 / 3 = 672 / 3 = 224 cm
if 2cm represent 3/4 km find the length on a scale of the following measurements 30km,75km,84km
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