Question 1167888
<br>
back and forth -- not back and fourth....<br>
This will be an infinite geometric series with first term 24 (feet) and common ratio 5/6.<br>
The infinite sum is the first term, divided by (1 minus the common ratio).<br>
{{{S = a(1)/(1-r)}}}<br>
Plug in the numbers and calculate.<br>