Answer :

logo88
21 and 2/3 all divided by 1 and 2/3 = answer
answer = 13
olemakpadu
To get the number of passes:

21  2/3  Divided by 1    2/3

Change to the improper fractions:

(21 * 3  + 2) /3  = 65/3.   
(1 * 3  + 2) /3  = 5/3.

=  65/3  Divide  5 / 3
=  65/3  * 3 /5           3 cancels out.   5 into 65 is 13.
= 13.