Answer: The required amount of money that she needs to pay is $6.
Step-by-step explanation: Given that Valentina purchased 200 beads for $48 to make neckalces and she needs to buy 25 more beads.
We are to find the amount of money she paid is she is charged the same rate.
We will be using the UNITARY method to solve the problem.
We have
cost of 200 beads = $48.
So, the cost of 1 bead will be

Therefore, the cost of 25 beads is given by

Thus, the required amount of money that she needs to pay is $6.