Question

Mary went up the Old Tower taking 3 steps per second. Then she carefully came down from the tower taking 2 steps per second. It took Mary 25 seconds longer to come down than to go up. How many steps does the Old Tower have?

Answer 1

150 steps

Explanation:

let the number of steps=x

time taken to go up=1/3×x=x/3 s

time taken to go down =1/2×x=x/2 s

now

`(x)/(2) -(x)/(3) =25\\multiply ~by~6\\3x-2x=25 * 6\\x=150`