Chemistry - Electrochemistry Question with Solution | TestHub

$\mathrm{A}{\mathrm{l}}^{3+}\left(\mathrm{a}\mathrm{q}\right)+3{\mathrm{e}}^{-}\to \mathrm{A}\mathrm{l}\left(\mathrm{s}\right);$$\mathrm{E}°=-1.66\mathrm{V}$
$\mathrm{C}{\mathrm{u}}^{2+}\left(\mathrm{a}\mathrm{q}\right)+2{\mathrm{e}}^{-}\to \mathrm{C}\mathrm{u}\left(\mathrm{s}\right);$$\mathrm{E}°=+0.34\mathrm{V}$
What voltage is produced under standard conditions by combining the half reaction with these standard electrode potentials?