An insect crawls up 5 m every second on a 60 m vertical rod and then falls down 200 cm over the next second . How many seconds will it take to climb the rod?
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Answer:
40 sec
Step-by-step explanation:
5m = 500 cm in 1 sec
60m = 6000 cm
it falls down 200 cm over next 1 sec
distance it covers in 2 sec= 500-200cm = 300cm
time taken to cover 300cm = 2 sec
time taken to cover 1 cm = 2sec/300cm
time taken to cover 6000cm
= 2sec/300cm×6000cm
= 40 sec
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