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Math Word Problems - GED, PSAT, SAT, ACT, GRE Preparation
7.10 Inverse Variation or Inverse Proportion

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Q 1: 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
-10 and 5 respectively
-10 and 4 respectively
4 and -10 respectively

Q 2: 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
9
4

Q 3: 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 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?
8
6
7

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