Final answer:
To find out when the total amount of money paid to both Fastservice and NotSlow will be the same, set up an equation and solve for the number of months. The number of months needed is 5 months.
Step-by-step explanation:
To find out when the total amount of money paid to both Fastservice and NotSlow will be the same, we need to set up an equation and solve for the number of months. Let's assume the number of months is represented by x. For Fastservice, the total amount paid would be 100 + 50x. For NotSlow, the total amount paid would be 75 + 75x. Setting these two expressions equal to each other, we get 100 + 50x = 75 + 75x. Solving for x, we find that the number of months needed for the total amount paid to be the same is 5 months.