Question
Fabian used 3 rubber bands to form the sides of triangle PQR where PQ = 10 cm, QR = p cm and PR = 4p cm. Riordan stretches two of the elastic bands and enlarges triangle PQR. The sides QR and PR are stretched to 3 times its original length. What is the perimeter of the stretched triangle PQR?
2 m

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Fabian used 3 rubber bands to form the sides of triangle PQR where PQ = 10 cm, QR = p cm and PR = 4p cm. Riordan stretches two of the elastic bands and enlarges triangle PQR. The sides QR and PR are stretched to 3 times its original length. What is the perimeter of the stretched triangle PQR?