Answer: Lou sold more rings ( 40). He sold 5 more rings than Jacob 
Explanation:
Hi, to solve this problem we have to analyze the information given: 
- Lou: 200 pieces sold- 20% were rings 
- Jacob: 200 pieces sold - 35 were rings 
We have to multiply the pieces sold by Lou (200) by the percentage given in the decimal form (20% /100=0.2), to obtain the numbers of rings sold by Lou. 
Mathematically speaking: 
200 x 0.2 = 40 rings 
40 (Lou)> 35 (Jacob) 
Lou sold more rings (40 > 35). He sold 5 more rings than Jacob (40-35 =5)