how much money would i have to save for 2 months to get 3,000$ when i already have 1,541.20$
$3,000 - $1,541.20 =$1,458.80 - this is what you need to save in 2 months, or:
$1,458.80 / 2 =$729.40 - this is what you need to save each month for 2 months.
