(399+601):k=625:25 equation
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The solution
Detail solution
Given the equation:
$$\frac{1000}{k} = 25$$
Use proportions rule:
From a1/b1 = a2/b2 should a1*b2 = a2*b1,
In this case
a1 = 1
b1 = -1/25
a2 = 1
b2 = -k/1000
so we get the equation
$$- \frac{k}{1000} = - \frac{1}{25}$$
$$- \frac{k}{1000} = - \frac{1}{25}$$
Divide both parts of the equation by -1/1000
k = -1/25 / (-1/1000)
We get the answer: k = 40
Sum and product of roots
[src]
$$40$$
$$40$$
$$40$$
$$40$$