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