- De acuerdo al enunciado, se tiene:
a = 10% * (c + d) = 10/100 * (c + d) → a = 0.1c + 0.1d (1)
c = 20% * (a + d) = 20/100 * (a + d) → c = 0.2a + 0.2d (2)
- Sustituyendo la ecuación (2) en (1), queda:
a = 0.1 *(0.2a + 0.2d) + 0.1d
- Resolciendo:
a = 0.02a+ 0.02d + 0.1d
a = 0.02a + 0.12d
a – 0.02a = 0,12d
a * (1 – 0.02) = 0.12d
0.98a = 0.12d
a = (0.12/0.98)d
a = 0.122d
- Sustituyendo este valor de d en la ecuación (2) se tiene:
c= 0.2 * 0.122d + 0.2 d
c = 0.244d + 0.2d
c = 0.444d
- Entonces, la relación a: c → a/c, es:
a / c = 0.122d / 0.444d
a /c = 0.275
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Verified answer
- De acuerdo al enunciado, se tiene:
a = 10% * (c + d) = 10/100 * (c + d) → a = 0.1c + 0.1d (1)
c = 20% * (a + d) = 20/100 * (a + d) → c = 0.2a + 0.2d (2)
- Sustituyendo la ecuación (2) en (1), queda:
a = 0.1 *(0.2a + 0.2d) + 0.1d
- Resolciendo:
a = 0.02a+ 0.02d + 0.1d
a = 0.02a + 0.12d
a – 0.02a = 0,12d
a * (1 – 0.02) = 0.12d
0.98a = 0.12d
a = (0.12/0.98)d
a = 0.122d
- Sustituyendo este valor de d en la ecuación (2) se tiene:
c= 0.2 * 0.122d + 0.2 d
c = 0.244d + 0.2d
c = 0.444d
- Entonces, la relación a: c → a/c, es:
a / c = 0.122d / 0.444d
a /c = 0.275