Answer:
Option A - $428.57
Explanation:
Given : You want to purchase a house in 7 years. The estimated cost is $180,000.00 and you want to make a 20% down payment.
To find : How much do you need to save per month in order to cover your down payment?
Solution :
The estimated cost is $180,000.00 and you want to make a 20% down payment.
i.e, The amount after down payment is 20% of 180,000


Time = 7 years
Time (in months)is

The amount need to save per month in order to cover your down payment



Therefore, Option A is correct.
The amount need to save per month in order to cover your down payment is $428.57