Answer:he must save 150 for each of the last two months.
Step-by-step explanation:
In the next 10 months, Colin wants to save 900 for his vacation. He plans to save 75 each of the first 8 months. This means that the total amount that Colin would save in the first 8 months would be
75 × 8 = 600
Let x represent the amount that he must save in each of the last two months in order to meet his goal if he saves the same amount each month. Therefore,
2x + 600 = 900
2x = 900 - 600 = 300
x = 300/2 = 150
