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Grade: 11
        

A monkey trying to ascend a greesy pole.He ascends 20 mtrs in one minute and goes down 4 mtrs in next minute.how much time it will take to ascend pole of 96 mtrs? (Ans:10 min 48 sec)

8 years ago

Answers : (1)

Mir Noaman Ali IIT-Roorkee
57 Points
							

in the frst second he ascends 20 mts nd next second comes down to 16 mts this goes on for 10 seconds at the end of 10 seconds it will be at 16x5 =80 mts now he has to climb 16 more meters    .....in 1 minute i.e. 60 seconds he climbs 20 mts so each second 1/3 metres so to climb 16 more metres he will need 16x3 seconds thats 10 mins 48 seconds 

8 years ago
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