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kramer
3 years ago
6

Solve the system x-0.25y=11750 -0.20x + y=10000

Mathematics
1 answer:
Debora [2.8K]3 years ago
4 0
X - 0.25y = 11,750 ⇒        x - 0.25y = 11,750
-0.2x + y = 10,000 ⇒ <u>0.05x - 0.25y = -2,500</u>
                                               <u>0.95x</u> = <u>14,250</u>
                                                0.95       0.95
                                                      x = 15,000
                                          x - 0.25y = 11,750
                                 15,000 - 0.25y = 11,750
                              <u> - 15,000              - 15,000</u>
                                              <u>-0.25y</u> = <u>-3250</u>
                                               -0.25      -0.25
                                                      y = 13,000
                                                 (x, y) = (15,000, 13,000)
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