Question

Write an equation to represent this situation and answer the question

Ella is trying to determine the side lengths of a triangle . She knows that the longest side is three times longer than the shortest . The medium side is ten more than twice the shortest side . If the perimeter is 142 com , how long is each side?

Answer 1

The equation would be x+3x(10+2x)=142
The sides are 22cm , 54cm and 66 cm.