First, find out what is 30% of $50.00 equal to:
[tex]\frac{30}{100}\cdot50=15[/tex]Each month, you save $15.00
Since a year has 12 months, multiply $15.00 times 12 to find the total amount of money that you have saved after one year:
[tex]12\cdot15=180[/tex]Therefore, you would have saved $180 after one year.