Q.

The difference of levels between two points A and B is 1 metre and their distance apart is 50 metres, the gradient is said to be

A. 1 in 50 or 2%
B. 1 in 5 or 20%
C. 1 in 20 or 5%
D. none of these
Answer» A. 1 in 50 or 2%
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