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Conversion of Metric Units

How many time...

Question

How many times does a 15 meter scale be used to measure a rope length of 9.75 hectometers?

A

62

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B

63

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C

64

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D

65

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Solution

The correct option is D 65
Convert hectometer into meter.
We know,
$1 hectometer = 100 m$
$∴ 9.75 hectometer = 9.75 \times 100 = 975 m$

Number of times scale used $= \frac{Length of rope}{Length of scale}$
$= \frac{975 m}{15 m} = 65 t i m e s$

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