Question
A frog leaps across 12 lily pads which are of the same distance apart. It takes the frog 19 seconds to get from the third  lily pad to the fourth lily pad. How long does it take for the frog to leap from the tenth lily pad to the eleventh lily pad?
4 m

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A frog leaps across 12 lily pads which are of the same distance apart. It takes the frog 19 seconds to get from the third  lily pad to the fourth lily pad. How long does it take for the frog to leap from the tenth lily pad to the eleventh lily pad?