Subject: mathqa
Question: a man saves a certain portion of his income during a year and spends the remaining portion on his personal expenses . next year his income increases by 40 % but his savings increase by 100 % . if his total expenditure in 2 years is double his expenditure in 1 st year , what % age of his income in the first year did he save ?
Option: 
A: 33.33 %
B: 45 %
C: 40 %
D: 28 %
Answer: C