Mixed Revision on-
Question. 1 Given that both u and v vary directly with each other. When u is 10, v is 15. Which of the following pairs does not meet the above conditions for the corresponding values of u and v?
(a) 2 and 3
(b) 8 and 12
(c) 15 and 20
(d) 25 and 37.5
Question. 2 Given that both x and y vary inversely with each other. When x is 10, y is 6. Which of the following pairs does not meet the above conditions for the corresponding values of x and y?
Question. 3 Assume that a piece of land is uniformly fertile. The area of land and the yield or produce from the land varies
Question. 4 The number of teeth and the age of a person varies
Question. 5 A vehicle needs 54 litres of diesel to cover a distance of 297 km. To cover a distance of 550 km, the amount of diesel required by the truck is
Question . 6 A car travels at a speed of 48 km/h to finish a certain journey in 10 hours. In order to cover the same distance in 8 hours, the speed of the car should be
Question. 7 Which of the following varies inversely with each other?
Question. 8 In which of the following cases, do the quantities vary directly with each other?
Question. 9 : If both x and y are in direct proportion, then 1/x and 1/y are
Question. 10 : Meena cycles to her school at an average speed of 12 km/h and takes 20 minutes to reach her school. In order to reach her school in 12 minutes, her average speed should be
Question. 11 Both x and y vary directly with each other. When x is 10, y is 15, which of the following is not a possible pair of corresponding values of x and y?
Question 12. In a camp, 100 people had food provision for 24 days. If 20 persons left the camp, the food provision will last for
(a) 30 days
(b) 96/5 days
(c) 120 days
(d) 40 days
Question 13: If two quantities u and v vary directly with each other, then
Question. 14 If two quantities u and v vary inversely with each other, then
Daily Practice - Mathematics
Material : CBSE - Class 8
Topic : NCERT - Mathematics
Material Type :