A shopkeeper gives a discount of Rs.12.50 on an article which has a market price of Rs.50. What is the selling price of the article? How much he will get by selling 11 articles. Round it off to the nearest tens.
Selling Price = Rs 37.5, Rounded of value of 10 articles = 410
Selling Price = Rs.( 50 - 12.5) = Rs. 37.5
Value of 11 articles = 11 X 37.5 = Rs. 412.5
Rounded of value of 11 articles = Rs. 410