If a is average number of peaks more than 10 mm of unevenness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (Ic), as recommended by Indian Northern Railways, is
A)Ic = 10 - a - b - c/4
B)Ic = 20 - a - b - c/4
C)Ic = 30 - a - b - c/4
D)Ic = 40 - a - b - c/4

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The Answer of If a is average number of peaks more than 10 mm of unevenness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (Ic), as recommended by Indian Northern Railways, is
A)Ic = 10 - a - b - c/4
B)Ic = 20 - a - b - c/4
C)Ic = 30 - a - b - c/4
D)Ic = 40 - a - b - c/4

If a Is Average Number of Peaks More Than 10