If the sides of a equilateral triangle is increased by 10 30 and 60 then a new triangle is formed By...........

Quantitative Aptitude ( CCS) Mensuration 2D

If the sides of a equilateral triangle is increased by 10% , 30%and 60%then a new triangle is formed. By what % perimeter of the triangle is increased ?

40.50%

32.45%

33.33%

35.67%

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Explanation:

Answer
33.33%
Explanation :
Let a = side of the triangle
Perimeter = 3a
New perimeter = a*110/100 + a*130/100 + a*140/100
= a(11+13+16)/10 = 4a
% increased in perimeter = (4a – 3a/3a)*100
= 100/3 = 33.33%