If T and R are tread and rise respectively of a stair, then

[Srinivasan]

If T and R are tread and rise respectively of a stair, then

(A) 2R + T = 60

(B) R + 2T = 60

(C) 2R + T = 30

(D) R + 2T = 30

The correct Answer Is
(A) 2R + T = 60