There are 10 party favors in each bag. Lonni buys 7 bags. Then he buys 3 more bags. How many favors did Lonni buy?
A. 70
B. 100
C. 30
7 bags + 3 bags = 10 bags bought
10 bags x (10 favors/bag) = ? favors
A. 70
B. 100
C. 30
10 bags x (10 favors/bag) = ? favors