Suppose there is a mortgage pool with an unpaid principal

balance at the beginning of the month of $$3,000,000.$ The scheduled

interest payment is $$4,500,$ and the principal payment expected is

$$15,000.$ If the pool receives $$25,500$ in actual TOTAL PAYMENTS that

month, the CPR is:$1\mathrm{.}797\%0\mathrm{.}201\%0\mathrm{.}151\%2\mathrm{.}386\%$