The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2

[Srinivasan]

The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm
effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral
axis is

(A) 20 cm

(B) 25 cm

(C) 30 cm

(D) 35 cm

The correct Answer Is
(C) 30 cm

 

[Vitthal007]

Please explain I getting ans 55.86cm what is the correct answer please explain anyone