Answer
The sum of the kinetic energies is $0.77~MeV$
Work Step by Step
We can find the missing mass $M$:
$1.00866~u = 1.00728~u+0.00055~u+M$
$M = 1.00866~u - 1.00728~u- 0.00055~u$
$M = 0.00083~u$
We can assume that the missing mass is converted into kinetic energy. We can find the energy $E$:
$E = Mc^2$
$E = (0.00083~u)~c^2$
$E = (0.00083)~(931.5~MeV/c^2)~(c^2)$
$E = 0.77~MeV$
The sum of the kinetic energies is $0.77~MeV$.