Math Word Problems - GED, PSAT, SAT, ACT, GRE Preparation 7.10 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: 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? 28 days 26 days 24 days

Q 2: 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? 29 lines 30 lines 32 lines

Q 3: 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. -10 and 5 respectively -10 and 4 respectively 4 and -10 respectively 5 and -10 respectively

Q 4: 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? 6 7 8

Q 5: 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 5 weeks another 4 weeks another 3 weeks

Q 6: It is known that current (A) in an electric circuit is inversely proportional to the resistance (R) in the circuit. When the resistance is 3 ohms, the current is 2 amperes. Find the resistance if the current is 5 amperes; and find the current when the r 1 ohms and 1 amperes respectively 1.2 ohms and 1.2 amperes respectively 2 ohms and 1 amperes respectively

Q 7: If y varies inversely as x; and x=6 when y=-3, find y when x=-9. 6 2 3

Q 8: 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? 40 days 50 days 55 days

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!