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Exercise 13.1 Class 8 maths 13. Direct and Inverse Proportions - ncert solutions - Toppers Study

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Exercise 13.1 Class 8 maths 13. Direct and Inverse Proportions - ncert solutions - Toppers Study

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Exercise 13.1 class 8 Mathematics Chapter 13. Direct and Inverse Proportions

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Exercise 13.1 Class 8 Maths 13. Direct And Inverse Proportions - Ncert Solutions - Toppers Study
Class 8 Ncert Solutions
Solution Chapter 13. Direct And Inverse Proportions Class 8
Solutions Class 8
Chapter 13. Direct And Inverse Proportions Exercise 13.1 Class 8

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13. Direct and Inverse Proportions

| Exercise 13.1 |

Exercise 13.1 Class 8 maths 13. Direct and Inverse Proportions - ncert solutions - Toppers Study

Exercise 13.1

Q1. Following are the car parking charges near a railway station upto

4 hours Rs 60

8 hours Rs 100

12 hours Rs 140

24 hours Rs 180

Check if the parking charges are in direct proportion to the parking time.

Solution :

Q2. A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of base that need to be added.

Q3. In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?

Solution:

Q4. A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours?

Solution:

Q5. A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length?

Q6. In a model of a ship, the mast is 9 cm high, while the mast of the actual ship is 12 m high. If the length of the ship is 28 m, how long is the model ship?

Therefore the length of model ship is 21 cm.

Q7. Suppose 2 kg of sugar contains 9 × 10⁶ crystals.

How many sugar crystals are there in

(i) 5 kg of sugar?

(ii) 1.2 kg of sugar?

Solution:

Q8. Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the map?

Q9. A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time

(i) The length of the shadow cast by another pole 10 m 50 cm high

(ii) The height of a pole which casts a shadow 5m long.

Solution:

Q10. A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?

Solution:

Other Pages of this Chapter: 13. Direct and Inverse Proportions

1. Chapter 13. Direct and Inverse Proportions | Exercise 13.1

2. Chapter 13. Direct and Inverse Proportions | Exercise 13.2

3. Chapter 13. Direct and Inverse Proportions | Exercise 13.3

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