Question
A frog leaps across 20 lily pads which are of the same distance apart. It takes the frog 9 seconds to get from the second  lily pad to the third lily pad. How long does it take for the frog to leap from the second lily pad to the fifteenth lily pad?
4 m

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A frog leaps across 20 lily pads which are of the same distance apart. It takes the frog 9 seconds to get from the second  lily pad to the third lily pad. How long does it take for the frog to leap from the second lily pad to the fifteenth lily pad?