Question

A triangle has a perimeter of 75 inches. Find the length of three sides

if one side is 15 inches larger than the smallest side, and the third
side is twice the smallest

Answer 1

The side lengths are:

15, 30, and 30

Explanation:

Let x determine the length of the smallest side length then

the other one is said to be 15 in larger so it's x + 15

finally the third size is said to be twice as the smallest one so it's 2x

The perimeter is the sum of all three sides added up

x + 2x + x + 15 = 75 add like terms

4x + 15 = 75 subtract 15 from both sides

4x = 60 divide both sides by 4

x = 15