We know that:
![Matthew\text{ }drinks\text{ 1}(2)/(3)cups\text{ of water each hour of exercise}](https://img.qammunity.org/2023/formulas/mathematics/college/ruo94w8p8zv0nrx5c6hdwer9p24zkkhyk0.png)
And he exercised for 14 hours this month. We must calculate how many cups of water he drank while he was exercising this month.
To find it we muts multiply
![1(2)/(3)\cdot14](https://img.qammunity.org/2023/formulas/mathematics/college/ldc9h7mdylz7rng9brmckiv5d7jj75q85u.png)
1. we need to convert mixed fraction to improper fraction
![1(2)/(3)=(3+2)/(3)=(5)/(3)](https://img.qammunity.org/2023/formulas/mathematics/college/xwwt5usfjppyt8b6r4rnxlvw4slz59tzw5.png)
2. we must replace the improper fraction in the initial multiplication
![(5)/(3)\cdot14](https://img.qammunity.org/2023/formulas/mathematics/college/gxws4mbu1nb4opr87hx4kehwohafw7ldge.png)
3. We must solve the multiplication
![(5)/(3)\cdot14=(70)/(3)](https://img.qammunity.org/2023/formulas/mathematics/college/cildauphmi4djk3i69icxa6nhc5lxfjs4h.png)
4. we need to convert improper fraction to mixed fraction
![(70)/(3)=23(1)/(3)](https://img.qammunity.org/2023/formulas/mathematics/college/6adorc2hv3fcyt2nusk3lql3ub9bm0y3qe.png)
ANSWER:
![\text{ B. }23(1)/(3)\text{ cups of water}](https://img.qammunity.org/2023/formulas/mathematics/college/h5uaonwk0wq792s7i5e4b9yba02nwqb4gr.png)