Answer:
$1800
Step-by-step explanation:
Assuming that there is no downpayment, 20 years has 20*12=240 months since each year has 12 months
Total payment being $420, 000 then monthly payment will be $420, 000/240 months=$1750 per month
Rounding off to the nearest hundred, this is approximately $1800
Therefore, the monthly payment will be approximately $1800