Solve the Problem Using Matrices

question 335

Multiple Choice

Solve the problem using matrices.
-Jerry has three pieces of string. The total length is 107 cm. The sum of the two longer pieces is 89 cm. The middle piece is twice as long as the shortest piece. What are the lengths of the three pieces?

• A) No solution
• B) 18 cm; 36 cm; 53 cm
• C) 9 cm; 18 cm; 80 cm
• D) 18 cm; 53 cm; 63 cm

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