What will be standard cell potential of galvanic cell with the following reaction?

$2C{r}_{\left(s\right)}+3C{d^{2+}}_{\left(aq\right)}\to 2C{r^{3+}}_{\left(aq\right)}+3C{d}_{\left(s\right)}$

$\left[Given:{E^o}_{C{r}^{3+}/Cr}=-0.74Vand{E^o}_{C{d}^{2+}/Cd}=-0.40V\right]$