Final answer:
To sign the lease in three months, Stanley needs to save approximately 82.14% of his monthly pay.
Step-by-step explanation:
To determine what percent of his monthly pay Stanley will need to save in order to sign the lease in three months, let's calculate his total savings needed first.
First and last month's rent: $750 x 2 = $1500
Security deposit: 30% of one month's rent = 30% x $750 = $225
Total savings needed = First and last month's rent + Security deposit = $1500 + $225 = $1725
Stanley's average bi-weekly net pay is $1050, so his monthly net pay is 2 x $1050 = $<<2*1050=2100>>2100.
To determine what percent of his monthly pay Stanley needs to save, divide the total savings needed by his monthly net pay: $1725 / $2100 = 0.8214.
To express this number as a percentage, multiply by 100: 0.8214 x 100 = 82.14%.
Therefore, Stanley needs to save approximately 82.14% of his monthly pay to sign the lease in three months.