After measuring 120 m of a rope, it was discovered that the
After measuring 120 m of a rope, it was discovered that the measuring metre rod was there centimetres longer. The true length of the rope measured is-
A121 m 20 cm
B123 m 60 cm
C123 m
D116 m 40 cm
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Answer is : 123 m 60 cm
Explanation:
Geven Data,
The length of the rod = 3 cm
To measure 120 m , Rod is apply by 120 times .
Therefore, total length that is measure by longer part = 120 x 3
= 360 cm = 3.60 m (∵ 100cm = 1m)
Then, the actual length of rope = 120m + 3.6m
= 123 m 60 cm
Hence, the answer is 123 m 60 cm.
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