If the sides of an equilateral triangle are increased by 20%, 30% and 50% respectively to form a new triangle the increase in the perimeter of the equilateral triangle is
A. 25%
B. $$33\frac{1}{3}\% $$
C. 75%
D. 100%
Answer: Option B
Solution (By Examveda Team)
Perimeter of equilateral triangle = 100 + 100 + 100 = 300
Perimeter of New triangle
= 120 + 150 + 130
= 400
% increase $$ = \frac{{100}}{{300}} \times 100 = 33\frac{1}{3}\% $$
This Question Belongs to Arithmetic Ability >> Mensuration 2D
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