Writing an equation
We know Miriam spends a total of $200
We know $60 of it is spent on rings
We know she buys 4 bracelets that have the same price, but that price is an unknown
The price of the 4 bracelets in total should be equal to 4x, where x is the price of each one.
We know the $60 spent on rings and what she spent on the 4 bracelets in addition should give us the total price.
That is
4x + $60 = $200
Answer part A: C
Answer of part B: Taking into consideration what we said before, x is the price of each bracelet.