The sides of a triangle are related as 3: 4: 5, Find the sides of a triangle if the perimeter is 48 cm.

Let 1 part be x, then the sides of the triangle relate to each other as 3x: 4x: 5x. The perimeter is 48 cm.Let’s make the equation:
3x + 4x + 5x = 48
12x = 48
x = 4
Do not forget that x is only one part, but to find the sides we need:
4 * 3 = 12
4 * 4 = 16
4 * 5 = 20
We found all 3 sides of the triangle, write the answer
Answer: 12.16.20