ritik
from
heritage, jammu
Subject :IMO Class : Class 7
An insect crawls up 5 cm every second on a 60 cm vertical rod and then falls down 2 cm over the next second. How many seconds will it take to climb the rod?
A20 seconds
B40 seconds
C39 seconds
D30 seconds
Ans 2:
Edit Post
Sara Kapoor
from
Manav Rachna International School charmwood, Faridabad
Class : Class 7
it should be b