The height of a triangle is decreased by 5% and its base increased by 50%. Its area will
Pick
A) decrease by 12.5%  B) increase by 12.5%  C) decrease by 25%  D) Increase by 25%  E) Increase by 42.5%
Explanation :   Let the initial height be 100 and the base be 200 units.   âˆ´ Area = 1/2 x 100 x 200 = 10000sq units   Now, height = 95 units and base = 300 units   âˆ´ New area = 1/2 x 95 x 300 = 14250   âˆ´ Area is increased by (14250 - 10000)/10000 x 100   = 42.5%   Answer : Option Increase by 42.5%
<result>E</result>
The height of a triangle is decreased by 5% and its base increased by 50%. Its area will