Chapter 18, Problem 68IAE

A handbook lists the solubility of ${\text{CaHPO}}_{\text{4}}$ as 0.32g ${\text{CaHPO}}_{\text{4}}\cdot {\text{2H}}_{\text{2}}\text{O/L}$ and lists $K_{10}$ $1\times {10}^{-7}$

   ${\text{CaHPO}}_{\text{4}}\left(\text{s}\right)\rightleftharpoons {\text{Ca}}^{\text{2+}}\left(\text{aq}\right)+{\text{HPO}}_4^{2-}\left(\text{aq}\right)$

1. Are these date consistent? (That is, are the molar solubilities the same when derived in two different ways?)
2. If there is a discrepancy, How do you account for it?