Answer:
2 apples and 6 bottles of water
Explanation:
since Bervin earns K22, her consumption possibilities frontier is:
apple         water          total utils obtained
4 units        1 unit          90 + 20 = 110 utils
3 units        3 units         75 + 54 = 129 utils
2 units        6 units         55 + 90 = 145 utils
1 unit          8 units         30 + 98* = 128 utils
0 units        11 units         0 + 98* = 98 utils
The optimal combination of apples and bottles of water is 2 apples and 6 bottles of water because that combination yields the most utils.
*Since the table only states the utils obtained until the 7th unit, we must assume that any additional unit consumed will provide 0 utils.
