$$ Please problem $4\mathrm{.}34$

$4\mathrm{.}34$ A bar having the cross section shown has been formed by securely bonding brass and aluminum stock. Using the data given in the table, determine the largest permissible bending moment when the composite bar is bent about a horizontal axis.

$\backslash$table$[[,$Aluminum,Brass$],[$Modulus of elasticity,$70$GPa,$105$GPa