A) 30 minutes
B) 50 minutes
C) 40 minutes
D) 1 hour 30 minutes
Correct Answer: C
Solution :
(c) The lift has to descend 240 m so as to reach \[-230\,\,m\]as it is 10 m above the ground level. Given that the lift descends at the rate of 6m/ minute. 6 m \[\to \] 1 minute \[240\,\,m\,\to \frac{\text{240}}{\text{6}}\text{ }\!\!\times\!\!\text{ minutes=40minutes}\]You need to login to perform this action.
You will be redirected in
3 sec