Subject: mathqa
Question: the wages earned by robin is 40 % more than that earned by erica . the wages earned by charles is 60 % more than that earned by erica . how much % is the wages earned by charles more than that earned by robin ?
Option: 
A: 28.57 %
B: 18.75 %
C: 23 %
D: 50 %
Answer: A