Q-18. Case study 2
On a bright Sunday morning three friends A, B and C decided to go on river for fishing
and boating. They decided to leave for the place together in the evening. The journey
was smooth, it just went as scheduled then they reached to the river, and started to set
the boat on sail. They were enjoying their ride with full speed. They started boating from
a place to another place which is at a distance of 42 km and then again returns to the
starting place. They took 20 hours in all. The time taken by them riding downstream in
going 14 km is equal to the time taken by them riding upstream in going 6 km.
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Based on the above situation, answer the following questions:
(0) Form the pair of linear equations in two variables from this situation.
() Find the speed of the boat in still water, and the speed of river.
(ii) The speed of boat in upstream is
(a) 5 km/hr (b) 2 km/hr
(c) 3 km/hr
(d) 6 km/h
(iv) At what time they will reach the destination, if the speed of boat is increased by 1
Km/hr and the speed of river is decreased by 1 km/hr?
(v)What will be the speed of boat in down stream.?
Answers
Answer:
Three invalids.—Sufferings of George and Harris.—A victim to one hundred and seven fatal maladies.—Useful prescriptions.—Cure for liver complaint in children.—We agree that we are overworked, and need rest.—A week on the rolling deep?—George suggests the River.—Montmorency lodges an objection.—Original motion carried by majority of three to one.
There were four of us—George, and William Samuel Harris, and myself, and Montmorency. We were sitting in my room, smoking, and talking about how bad we were—bad from a medical point of view I mean, of course.
We were all feeling seedy, and we were getting quite nervous about it. Harris said he felt such extraordinary fits of giddiness come over him at times, that he hardly knew what he was doing; and then George said that he had fits of giddiness too, and hardly knew what he was doing. With me, it was my liver that was out of order. I knew it was my liver that was out of order, because I had just been reading a patent liver-pill circular, in which were detailed the various symptoms by which a man could tell when his liver was out of order. I had them all.
It is a most extraordinary thing, but I never read a patent medicine advertisement without being impelled to the conclusion that I am suffering from the particular disease therein dealt with in its most virulent form. The diagnosis seems in every case to correspond exactly with all the sensations that I have ever felt.
Man reading bookI remember going to the British Museum one day to read up the treatment for some slight ailment of which I had a touch—hay fever, I fancy it was. I got down the book, and read all I came to read; and then, in an unthinking moment, I idly turned the leaves, and began to indolently study diseases, generally. I forget which was the first distemper I plunged into—some fearful, devastating scourge, I know—and, before I had glanced half down the list of “premonitory symptoms,” it was borne in upon me that I had fairly got it.
I sat for awhile, frozen with horror; and then, in the listlessness of despair, I again turned over the pages. I came to typhoid fever—read the symptoms—discovered that I had typhoid fever, must have had it for months without knowing it—wondered what else I had got; turned up St. Vitus’s Dance—found, as I expected, that I had that too,—began to get interested in my case, and determined to sift it to the bottom, and so started alphabetically—read up ague, and learnt that I was sickening for it, and that the acute stage would commence in about another fortnight. Bright’s disease, I was relieved to find, I had only in a modified form, and, so far as that was concerned, I might live for years. Cholera I had, with severe complications; and diphtheria I seemed to have been born with. I plodded conscientiously through the twenty-six letters, and the only malady I could conclude I had not got was housemaid’s knee.
I felt rather hurt about this at first; it seemed somehow to be a sort of slight. Why hadn’t I got housemaid’s knee? Why this invidious reservation? After a while, however, less grasping feelings prevailed. I reflected that I had every other known malady in the pharmacology, and I grew less selfish, and determined to do without housemaid’s knee. Gout, in its most malignant stage, it would appear, had seized me without my being aware of it; and zymosis I had evidently been suffering with from boyhood. There were no more diseases after zymosis, so I concluded there was nothing else the matter with .”
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