Question

Each side of a triangle is increased by 10 cm; if the ratio of the perimeter of the new triangle and the given triangle is 5 : 4, find the perimeter of the given triangle

Answer 1

Answer:

perimeter of old triangle is 120 and the new one is 150.

Step-by-step explanation:

since a triangle has 3 sides and increased by 10 cm each, then the total for 3 sides is 30 ( 10*3).

then if the original perimeter was 4x then the new one is 1x more than the original perimeter.

so , since x is considered 30 , then 4x will be 120 and 5x will be 150 .

so the perimeter of old triangle is 120 and the new one is 150.