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

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