Question
A frog leaps across 16 lily pads which are of the same distance apart. It takes the frog 13 seconds to get from the eighth  lily pad to the ninth lily pad. How long does it take for the frog to leap from the sixth lily pad to the eighteenth lily pad?
4 m

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A frog leaps across 16 lily pads which are of the same distance apart. It takes the frog 13 seconds to get from the eighth  lily pad to the ninth lily pad. How long does it take for the frog to leap from the sixth lily pad to the eighteenth lily pad?