if 2cm represent 3/4 km find the length on a scale of the following measurements 30km,75km,84km

3 answers

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
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