Answer:
![N_(a) = T_(a)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/d4p3iwvjnsdrti45qsqaarg0im19ef6ian.png)
![N_(c) = 2 * T_(c)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/jwz4eu92ioaujtdio7hm2ryxbajfnepnzq.png)
Explanation:
Alejandro has read 28 pages so far and he can read 1 page per minute.
Again, Carly has read 12 pages so far and he can read 2 pages per minute.
If the variable N represents the number of pages read by the readers and T in minutes represents the time spent by the reader to read this number of pages, then
For Alejandro:
......... (1)
For Carly:
.......... (2)
So, the equations (1) and (2) gives the number of pages that Alejandro and Carly read. (Answer)