If a bicyclist in motion increases his speed by 30 percent and then increases this speed by 10 percent, what percent of the original speed is the total increase in speed?
Choose the correct choice from the following:
A) 10 %
B) 40 %
C) 43 %
D) 64 %
E) 140 %

Rationale: let the sped be 100 an increase of 30 % the speed now is 130 a further increase of 10 % on 130 = 13 total increase = 43 on 100 = 43 % c
Answer: C