an insect climbs 3 CM of on a smooth rod in one second but slip down by 2 cm in 1 second find what time will insect take to reach at the top of 21 CM high rod?
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Answer:
41 second
Step-by-step explanation:
because he climbs 3cm but slip 2 cm and he takes one -one second so he climbs only 1 cm in 2 seconds so if we multiply 21 by 2 we can get our answer
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