Question
A frog leaps across 23 lily pads which are of the same distance apart. It takes the frog 18 seconds to get from the sixth  lily pad to the seventh lily pad. How long does it take for the frog to leap from the ninth lily pad to the seventeenth lily pad?
4 m

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A frog leaps across 23 lily pads which are of the same distance apart. It takes the frog 18 seconds to get from the sixth  lily pad to the seventh lily pad. How long does it take for the frog to leap from the ninth lily pad to the seventeenth lily pad?