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

Question

Quizplus · Accepted Answer

The gradient is calculated as the difference in height divided by the horizontal distance between two points. Here, the difference in height is 1 metre and the distance is 50 metres, so the gradient is 1 in 50. To convert this to a percentage, we divide 1 by 50 and multiply by 100, giving 2%.

The Difference of Levels Between Two Points a and B