Answer :
Find the total amount he spent.
14 + 5 + 11 = 30
Now divide 11 to this, because 11 is the price of the leash.
11 / 30 = 0.37
Multiply by 100:
0.37 * 10 = 37%
14 + 5 + 11 = 30
Now divide 11 to this, because 11 is the price of the leash.
11 / 30 = 0.37
Multiply by 100:
0.37 * 10 = 37%