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Choose the correct ratio to get the train started. Choose incorrectly and the animals get left behind.
Find the ratio of the given animals and train cars. Click on the correct ratio button and then click the arrow button to get the train moving. Answer incorrectly and the train leaves without the animals. The train starts automatically when time runs out.
Note: sometimes you'll need to compare the number of a type of animal to another type of animal and sometimes you'll need to compare the number of a type of animal to the number of train cars. On the last level the ratio in the buttons are reduced to their simplest form.
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