Question

A triangle has a perimeter of 58 cm the longest side is twice as long as the shortest side the third side is 10cm longer than the shortest side what are the lengthes of the three sides?

Answer 1

shortest side= x     longest side= 2x  third side= 10cm+x
58cm=x+2x+10cm+x
58cm=4x+10cm
48cm=4x
12cm=x
shortest side= 12cm   longest side= 24cm third side=22cm