AMC8 1993 Problem 21

Past Contests AMC8 AMC 8 - 1993
1

If the length of a rectangle is increased by 20 \% and its width is increased by 50 \%, then the area is increased by

Answer Choices
A. 10 \%
B. 30 \%
C. 70 \%
D. 80 \%
E. 100 \%