The sketch below shows a section through interior beams that belong to a floor system. The beams are simply supported and have a $24-ft$ span. Assume that concrete and steel strengths are $f^{\text{'}}c=5000$ psi and fy $=60$ksi, respectively.

Several values of Mu are given below. The maximum factored moment $($ Mu $)$ that an interior beam could resist is $q,$ ft$-$kip.

$380$

$450$

$290$

$400$

$420$