Question
Elijah used 3 rubber bands to form the sides of triangle XYZ where XY = 7 cm, YZ = z cm and XZ = 4z cm. Neave stretches two of the elastic bands and enlarges triangle XYZ. The sides YZ and XZ are stretched to 4 times its original length. What is the perimeter of the stretched triangle XYZ?
2 m

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Elijah used 3 rubber bands to form the sides of triangle XYZ where XY = 7 cm, YZ = z cm and XZ = 4z cm. Neave stretches two of the elastic bands and enlarges triangle XYZ. The sides YZ and XZ are stretched to 4 times its original length. What is the perimeter of the stretched triangle XYZ?