Answer:
439.6 inches
Step-by-step explanation:
The distance apart cna be obtained using the formular :
Number of revolutions = 7
Diameter, d = 20 inches
π * number of revolutions * diameter
3.14 * 7 * 20
= 439.6 inches
Let x=3.77777777...
10x=37.777777777...
9x=10x-x=34
9x=34 so x=34/9=3 7/9
Since he deposited 160 then took out 160 it did not change