Question

If i climb 5 stairs every second and then climb down 3 stairs over the next second, how many seconds will i take to climb 60 stairs?

Answer 1

stairs in 1 sec= 5
stairs in next 1 sec = -3 (becuase we climbing down)
stairs in 2 sec = 5-3
= 2 stairs
So if the person take 2 sec to climb 2 stairs
he is gonna take 60 sec to climb 60 stairs
Hence the answer is 60 sec