Advantageous internet

We had long been using internet from company A at 17.49 EUR per month — after the contract period. But we switched to internet from company B at 11.39 EUR per month, with the condition that a fee of 48.38 EUR is paid in the first month, which includes the internet installation.

After how many months of using the internet will I finally be in the black (start saving)?
How much will I save over a 2-year contract period?

Final Answer:

n =  7
u =  109.41 Eur

Step-by-step explanation:

17.49 x=48.38+11.39 (x1)  6.1x=36.99  x=6.136.99=6.06393443  x=61036996.063934  n=x=6.0639=7
t=24  u=17.49 t(48.38+11.39 (t1))=17.49 24(48.38+11.39 (241))=109.41 Eur



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