If a watch costs Rs. 10,250 , what will be its cost if 18 % is added as GST? Share with your friends Share 0 Sanjari Kalantri answered this Dear Student, Cost of the watch = Rs. 10,250After 18% GST, its price would be = 10250 + 18% of 10250 = 10250 + 18100 × 10250 = 10250 + 1845 = Rs. 12,095 2 View Full Answer