Question
A frog leaps across 27 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 first lily pad to the seventeenth lily pad?
4 m

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A frog leaps across 27 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 first lily pad to the seventeenth lily pad?