Question
A frog leaps across 29 lily pads which are of the same distance apart. It takes the frog 15 seconds to get from the first  lily pad to the second lily pad. How long does it take for the frog to leap from the seventh lily pad to the eighteenth lily pad?
4 m

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A frog leaps across 29 lily pads which are of the same distance apart. It takes the frog 15 seconds to get from the first  lily pad to the second lily pad. How long does it take for the frog to leap from the seventh lily pad to the eighteenth lily pad?