Please check my answer thanks :)

Based on the information below what is Peter's account balance ?

Peter has a credit card with an APR of 15% His balance last month was $423.78 He then made a purchase in the amount of $123.42 he later made apayment of $100.00 Peter's finance charge is $5.30

I got $452.50

2 answers

Your answer looks right to me.
452.50