Question Answers

8. Which quantities in the previous question vary inversely with each other? 8. Which quantities in the previous question vary inversely with each other? August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 ,

7. In which of the following case, do the quantities vary directly with each other? 7. In which of the following case do the quantities vary directly with each other? August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 ,

6. By travelling at a speed of 48 kilometres per hour, a car can finish a certain journey in 10 hours. To cover the same distance in 8 hours, the speed of the car should be 6. By travelling at a speed of 48 kilometres per hour a car can finish a certain journey in [...]

5. A truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is 5. A truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of [...]

4. The number of teeth and the age of a person vary 4. The number of teeth and the age of a person vary August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 ,

3. Assuming land to be uniformly fertile, the area of land and the yield on it vary 3. Assuming land to be uniformly fertile the area of land and the yield on it vary August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 ,

2. Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y? 2. Both x and y vary inversely with each other. When x is 10 which of the following is not a possible [...]

1. Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v? 1. Both u and v vary directly with each other. When u is 10 v is 15 which of the following is [...]

Example 12 : Under the condition that the temperature remains constant, the volume of gas is inversely proportional to its pressure. If the volume of gas is 630 cubic centimetres at a pressure of 360 mm of mercury, then what will be the pressure of the gas if its volume is 720 cubic centimetres at [...]

Example 11 : If two cardboard boxes occupy 500 cubic centimetres space, then how much space is required to keep 200 such boxes? Example 11 : If two cardboard boxes occupy 500 cubic centimetres space then how much space is required to keep 200 such boxes? August 3, 2021 Category: Chapter 13 - Direct and [...]