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0.25q+0.10d=4.95
D=3q


Sagot :

0.25q + 0.1d = 4.95
d = 3q

0.25q + 0.1(3q) = 4.95
    0.25q + 0.3q = 4.95
               0.55q = 4.95
                0.55     0.55
                      q = 9
0.25(9) + 0.1d = 4.95
    2.25 + 0.1d = 4.95
  - 2.25             - 2.25
               0.1d = 2.7
                0.1     0.1
                    d = 27