Answer :
Answer:
5 months
Step-by-step explanation:
Given
[tex]c = 30m + 50[/tex]
[tex]c = 20m + 100[/tex]
Required [Missing from the question]
At what month will the cost be equal
To do this, we equate both expressions
[tex]c = c[/tex]
This gives:
[tex]30m + 50 = 20m + 100[/tex]
Collect like terms
[tex]30m - 20m = 100 - 50[/tex]
[tex]10m = 50\\[/tex]
Solve for m
[tex]m = \frac{50}{10}[/tex]
[tex]m = 5[/tex]