Puzzle III

(With apologies to the Strand.)

A rope is passed over a pulley. It has a weight at one end and a monkey

at the other. There is the same length of rope on either side and

equilibrium is maintained. The rope weighs four ounces per foot. The

age of the monkey and the age of the monkey's mother together total four

years. The weight of the monkey is as many pounds as the monkey's mother

is years old. The monkey's mother was twice as old as the monkey was

when the monkey's mother was half as old as the monkey will be when

the monkey is three times as old as the monkey's mother was when the

monkey's mother was three times as old as the monkey. The weight of the

rope with the weight at the end was half as much again as the difference

in weight between the weight of the weight and the weight of the monkey.

Now, what was the length of the rope?

My Solution: I should think it would have to be a rope of a fairly good

length.

In only one department of English journalism have I met with a decided

measure of success; I refer to the juvenile competition department. This

is a sort of thing to which the English are especially addicted. As a

really educated nation for whom good literature begins in the home they

encourage in every way literary competitions among the young readers

of their journals. At least half a dozen of the well-known London

periodicals carry on this work. The prizes run all the way from one

shilling to half a guinea and the competitions are generally open to all

children from three to six years of age. It was here that I saw my open

opportunity and seized it. I swept in prize after prize. As "Little

Agatha" I got four shillings for the best description of Autumn in two

lines, and one shilling for guessing correctly the missing letters in

BR-STOL, SH-FFIELD, and H-LL. A lot of the competitors fell down

on H-LL. I got six shillings for giving the dates of the Norman

Conquest,--1492 A.D., and the Crimean War of 1870. In short, the thing

was easy. I might say that to enter these competitions one has to have

a certificate of age from a member of the clergy. But I know a lot of

them.

My Discovery of England · 第 27 / 34 题