Answer:It will take Mike 57 years to save enough money to purchase the boat.
Explanation:To calculate the number of years it will take for Mike to save enough money to purchase the boat, we can use the formula:
years = (600,000 - 150,000) / (150,000 * 5.25%/100)
Plugging in the values, we get:
years = (600,000 - 150,000) / (150,000 * 0.0525)
years = (450,000) / (150,000 * 0.0525)
years = 450,000 / 7,950
years = 56.57
Rounding up to the nearest year, it will take Mike 57 years to save enough money to purchase the boat.