Consider there is an elevator and you are at the upside and coming down using elevator. You walk 20 steps and then you stop, then you reach to the ground in 10 minutes. If you walk 10 steps and then stop, then you reach to the ground in 20 minutes. What is the speed of the elevator and How many steps are there??  Choose the correct choice from the following choices:  A) 1 step/min  B) 2 step/min  C) 3 step/min  D) 4 step/min  E) 5 step/min
Let e be the speed of the elevator, n be the no. of steps   n = 20 + 10*e = 10+20*e   e=1   n=30   No. of steps : 30   Speed : 1 step/min   1 step/minNSWER:1 step/min
<result>A</result>
Consider there is an elevator and you are at the upside and coming down using elevator. You walk 20 steps and then you stop, then you reach to the ground in 10 minutes. If you walk 10 steps and then stop, then you reach to the ground in 20 minutes. What is the speed of the elevator and How many steps are there??