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1. |
Divide 120 into three parts so that the sum of their products taken two at a time is maximum. If x, y, z are two parts, find value of x, y and z. |
A. | x=40, y=40, z=40 |
B. | x=38, y=50, z=32 |
C. | x=50, y=40, z=30 |
D. | x=80, y=30, z=50 |
Answer» C. x=50, y=40, z=30 | |