Inverse Proportion (Year 8)
Free printable UK Year 8 (Key Stage 3) maths worksheet: solve inverse proportion word problems (workers and days, pipes and time, speed and time).
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Grade 7 · Math worksheet
Name
Date
Math
Inverse Proportion
In each problem, the 2 quantities are inversely proportional (their product stays constant). Find the missing value.
- 1.It takes 3 workers 12 days to build a wall. How many days would 36 workers take (working at the same rate)?
- 2.4 identical pipes fill a tank in 10 hours. How many hours would 1 pipe take (all working at the same rate)?
- 3.A journey takes 3 hours at an average speed of 6 mph. How many hours would the same journey take at 2 mph?
- 4.It takes 6 workers 4 days to build a wall. How many days would 3 workers take (working at the same rate)?
- 5.5 identical pipes fill a tank in 8 hours. How many hours would 40 pipes take (all working at the same rate)?
- 6.A journey takes 4 hours at an average speed of 7 mph. How many hours would the same journey take at 4 mph?
- 7.It takes 7 workers 8 days to build a wall. How many days would 4 workers take (working at the same rate)?
- 8.5 identical pipes fill a tank in 3 hours. How many hours would 15 pipes take (all working at the same rate)?
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