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A ruler is 30cm long. How many times can it be used to measure a distance of 4.2...


Question

A ruler is 30cm long. How many times can it be used to measure a distance of 4.2m?

Options

A) 10

B) 14

C) 140

D) 12

The correct answer is B.

Explanation:

100 centimeters = 1 metre
Therefore 4.2 metres = 4.2 x 100 = 420 cm
Then how many 30cm can we find in 420cm
420 ÷ 30 = 14
The answer is 14 (times)

Explanation provided by Owoiya Toheeb


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Dicussion (1)

  • 100 centimeters = 1 metre
    Therefore 4.2 metres = 4.2 x 100 = 420 cm
    Then how many 30cm can we find in 420cm
    420 ÷ 30 = 14
    The answer is 14 (times)

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