Answer:
Robin's gross pay=$50,400
Explanation:
We are given that Robin has 15% of his gross pay directly into his mutual fund account each month.
If Robin deposited each month =$630
We have to find the gross pay
Let Robin's gross pay =x
15 % of gross pay= 15% of x=
![(15)/(100)* x=(15)/(100)x](https://img.qammunity.org/2020/formulas/mathematics/college/a85u7ryqvbteowbg055doo89bwg81lcw0s.png)
We know that 12 month in a year
![(15)/(100)x=630* 12](https://img.qammunity.org/2020/formulas/mathematics/college/jf44dovtytf1edt9ue6fzevcr1mplvggjw.png)
![15x=630* 100* 12](https://img.qammunity.org/2020/formulas/mathematics/college/63wz1736t7dul7jr30nifz8msg9akgqd7j.png)
Using multiplication property of equality
![x=(756000)/(15)](https://img.qammunity.org/2020/formulas/mathematics/college/xom66vqvw1igarbo14cjvlaozoa46vn54f.png)
Using division property of equality
![x=50400](https://img.qammunity.org/2020/formulas/mathematics/college/k1yydu06ipjomywiicss8l8ncs9exa2nbn.png)
Hence, Robin's gross pay=$50,400