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

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