IMO- Mathematics Olympiad Class 8: Questions 875 - 879 of 1029

The total area of a square and a rectangle is equal to 1125 sq. cm. The length of one side of square and rectangle is 25 cm. What is the sum of the perimeter of the square and rectangle?

Mihir correctly answered 80 % of the questions in a physics test contained exactly 40 questions. How many of the questions did he answer incorrectly?

Meena goes to a shop to buy a watch costing Rs. 1202 including sales tax of 6%. He asks the shopkeeper to reduce the price of the watch so that he can save an amount equal to the sales tax. The reduction in the price of the watch is________.

Ratna use chart paper to make the curved surface of the kaleidoscope. What would be the area of chart paper required by her, if she wanted to make a kaleidoscope of length 25 cm with a 3.5 cm radius?

Meena bought some packages of fruits. She bought n packages containing 10 fruits each and 2 packages containing 4 fruits. Which one of the following expression could be used to find the total number of fruits that Meena bought?