Answer:
5 days
Explanation:
Given
Damian
![Base\ Items = 5](https://img.qammunity.org/2022/formulas/mathematics/high-school/t7ab5g6yp4sc9wqtw4c2ed8uv17fcngtpo.png)
daily
Andrea
daily
Required [Missing from the question]
How long will they get the same number of items
Represent the number of items with x and the days with y.
So:
For Damian
![y = Base\ Items + Rate * x](https://img.qammunity.org/2022/formulas/mathematics/high-school/pn8d5j7eh52nvlli9fupp6ahev7sbhxi3k.png)
![y = 5 + 3 * x](https://img.qammunity.org/2022/formulas/mathematics/high-school/28jvgpcecn2oljexd85lzkx9i0icpdcdx5.png)
![y = 5 + 3 x](https://img.qammunity.org/2022/formulas/mathematics/high-school/9jnygq9ln18el7f6ccnsh3l8btzhm21u2e.png)
For Andrea
![y = Rate * x](https://img.qammunity.org/2022/formulas/mathematics/college/hy8b720eklowsutt2qaqz477axinow455h.png)
![y = 4* x](https://img.qammunity.org/2022/formulas/mathematics/high-school/jna2wlhccm1oudgtl2uqs3dh3g8jurs3rd.png)
![y = 4x](https://img.qammunity.org/2022/formulas/mathematics/college/1mdohloh3bj9qqvv1ecp1y70prle7lkd1y.png)
Equate both expressions.
![4x = 5 + 3x](https://img.qammunity.org/2022/formulas/mathematics/high-school/hm5mvm62shvgf3ib7dt2dl9a51izizcuf4.png)
Collect like terms
![4x - 3x = 5](https://img.qammunity.org/2022/formulas/mathematics/high-school/of1gi6ny1efp4a0xy8e7i9bmwdmrbzjrzq.png)
![x = 5](https://img.qammunity.org/2022/formulas/mathematics/college/zl3xsuljtiu8wy0fz8ilueakk81qu6lhda.png)
Hence, they will have equal amount of items after 5 days