X=7%
y=12%
x+y=20000
0.07x+0.12y=20000*0.19=3800
Conversion factor is the term that is to be multiplied to a variable when converting between units. The conversion factor is: 
Given that:

From standard unit of conversion:

So, we have:


Cross multiply

Divide both sides by 1kg

Rewrite as:

Hence, the conversion factor is: 
Read more about conversion factors at:
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Answer:
the number is 8 andequation is 3x-5=19
Answer: i think its B
Step-by-step explanation: