Rent for first two kilometers = Rs 20.
Rent for excess of 2 km and up to 10 km = Rs 5
For every km in excess of 10 km = Rs 8
Bullock cart charge for each km = Rs 2
Total rent spent by Sardar Khan= Rs 102
According to the statement,
After 14 km. he left the taxi
20 + 8(5) + 4(8) = 20 + 40 + 32 = 92
He paid Rs 92 to the taxi driver.
Money paid to bullock cart driver = 102 - 92 = Rs 10
Distance covered by him in bullock cart = 10/2 = 5 km.
Distance of his home from railway station = 5 + 14 = 19 km.