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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
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- 25%
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33 1 % 3 - 75%
- 100%
Correct Option: B
Let the side of equilateral triangle be x units.
∴ Perimeter = 3x units.
After increase, Perimeter = 1.2x + 1.3x +1.5x = 4x units
Increase = 4 x – 3x = x units
| ∴ % Increase = | × 100 = | 33 = | % | |||
| 3x | 3 | 3 |
