Final answer:
Olivia spent $23.40 on the bracelet.
Step-by-step explanation:
To find the amount Olivia spent on the bracelet, we need to subtract the cost of the sunglasses from her total purchase amount. The equation is $39.75 - $16.35 = b, where b represents the cost of the bracelet.
Subtracting, we get $23.40 = b.
Therefore, Olivia spent $23.40 on the bracelet.