Answer: Ms. Witt bought more.
Ms. Witt bought 2 more jars than Ms. Karp.
Explanation:
Given: Ms. Witt bought 4 boxes of paint with 5 jars of paint in each box.
So, total jars she bought = 4 x 5 = 20
Ms. Karp bought 3 boxes of paint with 6 jars in each box.
So, total jars she bought = 3 x 6 = 18
Clearly , 20> 18
That means, Ms. Witt bought more.
Also, 20-18 =2
So, Ms. Witt bought 2 more jars than Ms. Karp.