Question
A frog leaps across 25 lily pads which are of the same distance apart. It takes the frog 20 seconds to get from the eleventh  lily pad to the twelfth lily pad. How long does it take for the frog to leap from the second lily pad to the eighteenth lily pad?
4 m

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A frog leaps across 25 lily pads which are of the same distance apart. It takes the frog 20 seconds to get from the eleventh  lily pad to the twelfth lily pad. How long does it take for the frog to leap from the second lily pad to the eighteenth lily pad?