James Johnson bought a coupon bond yielding 4.

The PVBP (Present Value of a Basis Point) can be calculated by taking the change in the bond's price and dividing it by the change in yield (expressed in basis points). Here, the bond's price drops from $1,000 to $976 when the yield increases from 4.7% to 4.71%, which is a 1 basis point increase. The change in price is $1,000 - $976 = $24. Therefore, the PVBP is $24 / 1 = $24.