Situation $4$: A reinforced concrete rectangular beam has a width of $300mm$ and an effective depth of $500mm.$ The steel yield strength is $415$ MPa and the concrete compressive strength is $28$ MPa.

$22.$ Calculate the balanced steel ratio.

a$.0\mathrm{.}02882$

c$.0\mathrm{.}02458$

b$.0,02337$

d$.0\mathrm{.}02881$

$23.$ Which of the following most nearly gives the maximum steel area $(m{m}^2)$ for single reinforced tension$-$controlled section?

a$.3150$

c$.2950$

b$.2750$

d$.3250$

$24.$ Calculate the ultimate moment capacity of the beam if it is reinforced with $5-25mm$ diameter tension bars?

a$.463$

c$.392$

b$.416$

d$.436$