each side of a triangle increased by 10 cm. if the ratio of the premeter of a new triangle and a given triangle is 5:4. find the peremeter of a given triangle
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Answer:
120
Step-by-step explanation:
Let the perimeter be x + y + z
new perimeter is x + y +z + 30
x + y + z + 30/ x + y + z = 5/4
4(x + y + z+ 30) = 5(x + y + z)
4x + 4y + 4z + 120 = 5x + 5y + 5z
120 = x + y + z
hence the perimeter of the given triangle is 120
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