Answer:
orange: 0.2$, apple: 0.4$
Explanation:
we mark the price of an orange x and the price of an apple y. then we write down Maggie's and Tanya's purchases as a set of equations:
10 oranges and 5 apples for 4$ means:

9 oranges and 3 apples for 3$ means:

we use the second equation to isolate y:

and plug it in the first equation:

and then we find y:
