Question

3. Reena climbs up 5 stairs every second and then climbs down 2 stairs over the next second. How many
onds will she take to climb 60 stairs
Divide the result by 3 and multiply​

Answer 1

Answer:

She will climb 60 stairs on 39 seconds. The net climb for Reena is 3 stairs per 2 seconds. So she should take (60/3) *2=40 second.

Answer 2

she will climb 60stairs in 39second the net climb for reena 3stairs per 2 seconds so she should take (60/3) *2=40 seconds