A ruler is 30 cm long. How many times can it be used to measure a distance of 4.2 m?
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Correct Answer: Option C
Explanation:
Since 1 meter is equivalent to 100 cm, the ruler can be used 42 times (4.2 m * 100 cm/m = 420 cm; 420 cm / 30 cm = 14 times).
Since 1 meter is equivalent to 100 cm, the ruler can be used 42 times (4.2 m * 100 cm/m = 420 cm; 420 cm / 30 cm = 14 times).