Answer: $2 and $8 or $4 and $6.
Explanation:
Given statement : Kia paid $10 for two charms.
Then, the possible combinations of their costs would be :
10=1+9
10=2+8
10=3+7
10=4+6
10=5+5
But, the price of each charm was a multiple of $2 i.e. only even numbers.
Then , the possible combinations of their costs would be :
10=2+8
10=4+6
Hence, the the possible prices of the charms : $2 and $8 or $4 and $6.