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

1.

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
[E].	3R + 27 = 30

Answer: Option A

Explanation:

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