Mary And Marmaduke

Unreviewed import — a classic from the public domain; its solution has not been machine-checked yet.

math

Marmaduke: "Do you know, dear, that in seven years' time our combined ages will be sixty-three years?" Mary: "Is that really so? And yet it is a fact that when you were my present age you were twice as old as I was then. I worked it out last night." Now, what are the ages of Mary and Marmaduke? 47--ROVER'S AGE. "Now, then, Tommy, how old is Rover?" Mildred's young man asked her brother. "Well, five years ago," was the youngster's reply, "sister was four times older than the dog, but now she is only three times as old." Can you tell Rover's age?

Solution

Commit an attempt to unseal the proof. Write your answer — right or wrong, thinking it through is the point.

Solution

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