Increasing the original price of an article by 15% and then increasing the new price by 15% again is equivalent to increasing the original price by what %?  Choose one.
A) 34 B) 40 C) 68 D) 88 E) 102
Let the price of a commodity is increased by a% and then b% then the final increment will be   1 + a/100 + b/100 + ab/10000   Now the same logic can be applied with decrements also with just changing the signs.   Let for example price of commodity is increased by a% and then decreased by b% then the resulting increase/decrease will be   1 + a/100 - b/100 -ab/10000   For the above question the approach will be    1 + 0.15 + 0.15 + 0.0225= 
<gadget id="calculator"> 1 + 0.15 + 0.15 + 0.0225</gadget>
<output>1.3225</output>
1.3225==&gt; 32.25%   Closest answer is 34
<result>A</result>
Increasing the original price of an article by 15% and then increasing the new price by 15% again is equivalent to increasing the original price by what %?