Class 8 Mathematics: Direct and Inverse Proportions
Answer the questions and tap Submit to see your score. Your progress is auto-saved on this device.
Jump to question
Q1 · MCQ · 1 mark
If x and y are in direct proportion and x = 4 when y = 12, what is y when x = 7?
Q2 · MCQ · 1 mark
Which situation represents inverse proportion?
Q3 · MCQ · 1 mark
If 5 workers complete a job in 12 days, how many days will 10 workers take?
Q4 · MCQ · 1 mark
If x/y = k (constant), what is x when y = 8 and k = 3?
Q5 · MCQ · 1 mark
A car travels 300 km using 25 litres of petrol. How much petrol is needed for 600 km?
Q6 · FILL · 1 mark
In direct proportion, as one quantity increases, the other quantity ____.
Q7 · FILL · 1 mark
In inverse proportion, the product of the two quantities is always ____.
Q8 · FILL · 1 mark
If 8 pipes fill a tank in 6 hours, 12 pipes fill the same tank in ____ hours.
Q9 · FILL · 1 mark
A recipe needs 2 cups of sugar for 4 people. For 10 people, ____ cups are needed.
Q10 · FILL · 1 mark
If x and y are in inverse proportion and x = 6, y = 4, then when x = 12, y = ____.
Q11 · SHORT · 3 marks
A train covers 90 km in 1.5 hours. How long to cover 210 km? Identify proportion type and solve.
Q12 · SHORT · 3 marks
20 workers build a wall in 30 days. How many workers finish it in 12 days? Show working.