First calculate the difference between the prices of the shoes
67-52= 15
Next, divide the difference by 52 (the original price)
15/52 = 0.28846
Multiply by 100 to get the percentage (rounded to nearest percent)
0.28846 = 28.8% = 29% rounded
The price of the pair of shoes increased by 29% (rounded).
Hope this helps! :)