A hill road is provided with ruling gradient of 6 per cent. If a horizontal curve of 75 m is to be introduced, Calculate the compensated gradient to be provided on the curve.
1
\(\frac{1}{{16.67}}\)
2
\(\frac{1}{{13.33}}\)
3
\(\frac{1}{{20}}\)
4
\(\frac{1}{{21.76}}\)