Question
A frog leaps across 14 lily pads which are of the same distance apart. It takes the frog 18 seconds to get from the seventh  lily pad to the ninth lily pad. How long does it take for the frog to leap from the first lily pad to the fifteenth lily pad?
4 m

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A frog leaps across 14 lily pads which are of the same distance apart. It takes the frog 18 seconds to get from the seventh  lily pad to the ninth lily pad. How long does it take for the frog to leap from the first lily pad to the fifteenth lily pad?