Sally earns per hour = $12
Sally works for in a week = 16 hours.
So, Sally earns in a week =
![12*16=192](https://img.qammunity.org/2019/formulas/mathematics/middle-school/9hnfzx46y8bbmbqroolilbtoa0li0dv1bd.png)
Sally can save money each week= 20% of 192
![(20)/(100)*192=38.40](https://img.qammunity.org/2019/formulas/mathematics/middle-school/arzxd26m1j6vj1602kregvigs4yfjdyxzj.png)
A. How much does she earn each week ? Sally earns $192 in a week.
B. How much money will she save each week? Sally will save $38.40 each week.
C. How much money will she save each month (assume there are 4.3 weeks in a month)
Savings of 1 week = $ 38.40
Savings of 4.3 weeks =
![4.3*38.40=165.12](https://img.qammunity.org/2019/formulas/mathematics/middle-school/ki7r9cft4nw2gyt1n4pr908ty0mhlofepu.png)
Hence, she will save $165.12 in a month.
D. How many months will it take her to save the money?
Total money needed = $1800
Number of months needed to collect this amount =
![(1800)/(165.12)=10.90](https://img.qammunity.org/2019/formulas/mathematics/middle-school/xpqg3y6s0bmbmo0fbrdi5eooqmdqttr0dt.png)
Hence, it will take 11 months approx to save $1800.