An insect climbs 10m slippery rock in a minute and then slips down 9m in the next minute. How long will it take him to climb a 30m slippery rock?

Answer 1

the bug gains 1m each 2 minutes

after 20*2 minutes it has climbed 20 meters

During the 41st minute it climbs to 30m and is done.

Answer 2

1hour

Answer 3

30 minute

Answer 4

Dev kharbanda

Answer 5

21 minutes

Answer 6

Sorry by mistake,
Answer is 41 minutes not 21 minutes