Start learning 50% faster. Sign in now
Let the cost price and marked price of the article be Rs. 4x and Rs. 7x, respectively Therefore, selling price of the article = 1.25 × 4x = Rs. 5x According to the question, 7x – 5x = 800 Or, x = 800/2 = 400 Therefore, amount by which article is marked up above its cost price = 7x – 4x = 3x = Rs. 1200
The average weight of 8 persons increased by 1.5 kg when a person weighing 65 kg is replaced by a new person. What could be the weight of a new person?
Ashish bought 25 notebooks for Rs.1230 from shop A and 12 notebooks for Rs.805 from shop B. What is the average price he paid per book?
There are 40 elements in a data set and their average is 75. If every element is scaled by a factor of 12, compute the new average.