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Solution: Determine the sum of the solution to the simultaneous equations: xy = 15, yz = 35, zx = 21

Determine the sum of the solution to the simultaneous equations:  xy = 15, yz = 35, zx = 21

Problem Statement: EE Board March 1998

Determine the sum of the positive valued solution to the simultaneous equations:
xy = 15, yz = 35, zx = 21.

  • A. 16
  • B. 13
  • C. 17
  • D. 19

Problem Answer:

The sum of the solution to the simultaneous equations is 15.

Solution:

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