Class 8 Maths – Chapter 13
Direct and Inverse Proportions
STEP 8: Worksheet (Practice Questions)
Direct and Inverse Proportions
STEP 8: Worksheet (Practice Questions)
📌 Instructions:
• Solve all questions neatly
• Show steps where required
• Identify direct or inverse proportion carefully
• Solve all questions neatly
• Show steps where required
• Identify direct or inverse proportion carefully
✍️ Worksheet Questions
- If 5 notebooks cost ₹75, find the cost of 12 notebooks.
- 8 workers can complete a work in 15 days. How many days will 12 workers take to complete the same work?
- If 20 litres of petrol is sufficient to travel 300 km, how far can the vehicle travel with 35 litres of petrol?
- A car travels 180 km in 3 hours. How much distance will it travel in 5 hours at the same speed?
- If 6 men can dig a trench in 10 days, how many days will 15 men take to dig the same trench?
-
Identify whether the following quantities are in direct or inverse proportion:
a) Number of students and total marks obtained
b) Speed and time for a fixed distance
c) Number of workers and time taken - If x ∝ y and x = 24 when y = 6, find x when y = 10.
- If x ∝ 1/y and x = 8 when y = 4, find y when x = 16.
📘 Practice Tip:
• Direct proportion → use ratio
• Inverse proportion → product remains constant
• Always write units in final answer
• Direct proportion → use ratio
• Inverse proportion → product remains constant
• Always write units in final answer
📘 Class 8 Mathematics – Complete Library
CBSE | NCERT | State Syllabus
Chapter 1: Rational Numbers
Chapter 2: Linear Equations in One Variable
Chapter 3: Understanding Quadrilaterals
Chapter 4: Practical Geometry
Chapter 5: Data Handling
Chapter 6: Squares and Square Roots
Chapter 7: Cubes and Cube Roots
- NCERT Notes
- MCQs
- Worksheet
- Worksheet Answers
- Mind Map & Easy Tricks
- Important Exam Questions
- Very Important Questions
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