The size of a quantity first doubles and then increases by a further 16%. After a short time its size decreases by 16%. What is the net increases in size of the quantity?

A.
(frac{59300}{625}) 
B.
(frac{50900}{625}) 
C.
200% 
D.
+100%
Correct Answer: Option C
Explanation
Let x rept. the size of the quantity
2x + (frac{116}{100}) x (frac{84}{100})
= 200%