Question

An insect crawls up 5 cm every second on a 60cm vertical rod and then falls down 2 cm over the
next second. How many seconds will it take to dimb the rod?​

Answer 1

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Answer is 40 seconds. the insect goes up by 5 cms in one sec. it comes down by 2 cms in next one sec. therefore distance travelled in 2 sec = 5-2 = 3cms.