Answer:
The answer is A.-2, |-4/5|, |-1|, |3.5|, |-4.2|
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let the number of hours Nick does the job alone to be x - 3 hours
Hence, in 1 hour, Nick has done 1/x - 3
Together they complete the job in 9 hours
Hence, let's represent the job as 1
9/x + 9/x - 3 = 1
Multiply through by (x)(x-3)
9(x- 3) + 9(x) = 1
9x - 27 + 9x = (x)(x-3)
-27 = x² - 3x
x² - 3x +27 = 0
1 / 5 = 0.2 pesos.
125 * 0.2 = 25 pesos el litro
THE first option is correct
