Dell 3541 15.6-inch Laptop (A-Series-Quad-Core A6/4GB/500GB HDD/Linux/2GB Graphics) Rs. 17683 @ Amazon
http://www.amazon.in/Dell-3541-15-6-inch-Laptop--Quad-Core/dp/B00OHW1VL4/ref=sr_1_1?ie=UTF8&qid=1459237290&sr=8-1&keywords=Dell+3541+15.6-inch