Grade 6 - Mathematics 7.6 Inverse Variation or Inverse Proportion

Inverse Variation or Indirect Variation Directions: Answer the following questions. Also write at least ten examples of your own.

Q 1: If y varies inversely as x; and x=6 when y=-3, find y when x=-9. 6 3 2

Q 2: The number 'r' varies inversely as 's' and the constant of variation is 20. Find s when r=5; and find r when s=-2. 5 and -10 respectively 4 and -10 respectively -10 and 5 respectively -10 and 4 respectively

Q 3: A farmer has enough grain to feed 50 cattle for 10 days. He sells 10 cattle. For how many days will the grain last now? 55 days 40 days 50 days

Q 4: 35 carts are needed to transport the entire grain in a warehouse at the rate of 8 bags a truck. But the truck drivers objected saying it was too heavy and carried only 7 bags a truck. How many more trucks are needed to transport the grain? 5 4 9

Q 5: 24 people can construct a house in 15 days. But the owner would like to finish the work in 12 days. How many more workers should he employ? 7 6 8

Q 6: At the rate of 28 lines per page, a book has 300 pages. If the book has to contain only 280 pages, how many lines should a page contain? 32 lines 30 lines 29 lines

Q 7: The groceries in a home of 4 members are enough for 30 days. If a guest comes and stays with them, how many days will the groceries last? 24 days 28 days 26 days

Q 8: In an army camp, there is food for 8 weeks for 1200 people. After 3 weeks, 300 more soldiers joined the camp. For how many more weeks will the food last? another 4 weeks another 3 weeks another 5 weeks

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Question 10: This question is available to subscribers only!