And yet I have no life.
97. A waterman rows a given distance, a, and back again in b hours, and finds that he can row c miles with the current, for d miles against it. Required, the time of rowing down, the time of rowing up, the rate of current, and the rate of rowing.
98.
As I was beating on the far east grounds,
Up starts a hare before my two greyhounds;
The dogs, being light of foot, did fairly run,
To her fifteen rods, just twenty-one;
And the distance that she started up before,
Was six-and-ninety rods, just and no more;
Now, I would have you Merry boys declare