Reason + inverse relationship - practice problems - last page
Number of problems found: 46
- Chickens
4 chickens give 4 eggs in 4 days. How many eggs can give 8 chickens for 8 days? - Cats
Two cats caught two mice in two days. How many mouses will catch 6 cats for 6 days? - Pool
If water flows into the pool by two inlets, fill the whole for 20 hours. The first inlet filled the pool 8 hour longer than the second. How long does the pool take to fill with two inlets separately? - Washer
The washing machine drum washes at 71 RPM. The washing machine motor pulley has a diameter of 8 cm. What must be the diameter of the drum machine pulley when the motor is at 351 RPM?
- Cyclist
The cyclist goes uphill 10 km for 50 minutes and downhill minutes for 29 minutes. Both applied to the pedals with the same force. How long does he pass 10 km by plane? - Tractors
Fields go plow two tractors with various performances. The first tractor plows the whole field in 11 hours. The second tractor plows the whole field 19 hours longer. How long does it take to plow the whole field with two tractors?
We apologize, but in this category are not a lot of examples.
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