Jack & Jill went to the hill....In going to hill (upword
Direction)...Jack went to the hill first nd waited for Jill
for "x" hours.. Jack's speed was then twice of Jill.. In
the down word direction Jill can go 3km in a hour, while
Jack can go 1km in 1 hour.. Jill reach the ground 1st nd
waited for Jack for "x" hours.. Total journey they traveled
is 6 km.. Find the speed of Jack...
- 3 Answers
- 6008 Views
- CTS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / bharath raj
previous ans wrong again..!!!!
first find x its 2 hours
total journey 6 hrs 3km up and also down
jill takes one hr to come down and jack takes 3 hrs so x
is 2 hours....
And while going up jack goes at 1.5km/hr and jill goes at
0.75 km hr so to travel 3 km they take 2 hrs and 4 hrs
respectively...!!! x again is 2 hrs...
so jack totally takes 5 hrs to travel 6 km
therfore speed is 6/5 km per hour
thats is 1.2 km per hour is the correct answer
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / khanijkumar
for jack
3=v*t; if his speed is v and time taken was t hours
For Jill
3=u*(x+t);
There fore
v*t=u(x+t)
2*u*t=u(x+t)
2t=x+t;
x=t;
In down word direction
jill speed 3km/hr
time taken by him to cover 3 kms is 1 hr;
time taken by Jack is 3 hr;
There fore jill wait 2 hr;
x=2;
There fore t=2;
v=3/2=1.5km/hr
There fore velocity of Jack is 1.5km/hr in the upword
direction
downward velocity is 1 km/hr
there fore
average speed is 2*1.5*1/(1.5+1)=1.2km/hr
| Is This Answer Correct ? | 1 Yes | 0 No |
the concession stand at cinema city sells popcorn in three sizes-large,super and jumbo one day cinema city 240 bags of popcorn and the ratio of large and super to jumbo was 8:17:5.how many super bags of popcorn were sold on that day
If he sells 40 mangoes, he will get the selling price of 4 mangoes extra, What is his percentage increase in profit ?
9 Answers Infotech, L&T, Lucent,
Please,let me know the RRB question papers for Junior Engg.Electrical & Electronics Engg post.Thank You
A and B can do a piece of work in 72 days; B and C can do it in 120 days; A dn C can do it in 4 days. Who among these will take the least time if put to do it alone?
10men and 10 women are there, they dance with each other, is there possibility that 2 men are dancing with same women and vice versa?
PlZ Send me the Banking(Axis) Sector Question paper to my id?
The Parallelogram PQRS, the line RS have midpoint T from line PQ. What is the ratio of Triangle PTS / parallelogram PQRS?
<!--[if !supportLists]-->1) <!--[endif]-->1 ,27,125,?,729,1331 Ans. 343 Hint. 1^3, 3^3,5^3, 7^3, 9^3………. 2) 7, 19,31,43, ? , 77,89,101 Hint: add 12 to each 3) y w v t r p n Find next letter 4) There is a rectangular Garden whose length and width are 60m X 20m.There is a walkway of uniform width around garden. Area of walkway is 516m^2. Find width of walkway a)1 b) 2 c)3 d)4 Ans: 3 5) ------------------- = 10^4+10^2 Ans: 10^4 6) If a certain sum of money at SI doubles itself in 5 yrs then what is the rate? a)5% b) 10% c)25% d)20% Ans: 20% check answer 7) Fresh Grapes contain 90% water by wt. Dried grapes contain 20% water by %age. What will b wt of dried grapes when we begin with 20 kg fresh grapes? 8. A man engaged a servant on a condition that he’ll pay Rs 90 and also give him a bag at the end of the yr. He served for 9 months 10^10 and was given a turban and Rs 65. So the price of turban is Rs 10 / 19 / 0 / 55 9). The sum of six consecutive odd nos. is 888. What is the average of the nos.? i. 147 ii. 148 iii. 149 iv. 146 10. In a race from pt. X to pt Y and back, Jack averages 30miles/hr to pt Y and 10 miles/hr back to pr X.Sandy averages 20 miles/hr in both directions. If Jack and Sandy start race at same tym, who’ll finish 1st Jack/Sandy/they tie/Impossible to tell 11. A man engaged a servant on a condition that he’ll pay Rs 90 and also give him a bag at the end of the yr. He served for 9 months and was given a turban and Rs 65. So the price of turban is Rs 10 / 19 / 0 / 55 22. Three wheels make 36, 24, 60 rev/min. Each has a black mark on it. It is aligned at the start of the qn. When does it align again for the first tym? 14/20/22/5 sec 23. If 1= (3/4)(1+ (y/x) ) then i. x=3y ii. x=y/3 iii. x=(2/3)y iv. None REASONING Direction for Qn 15-18 An employee has to allocate offices to 6 staff members. The offices are no. 1-6. the offices are arranged in a row and they are separated from each other by dividers>hence voices, sounds and cigarette smoke flow easily from one office to another Miss R needs to use the telephone quite often throughout the day. Mr. M and Mr. B need adjacent offices as they need to consult each other often while working. Miss H is a senior employee and his to be allotted the office no. 5, having the biggest window. Mr D requires silence in office next to his. Mr. T, Mr M and Mr. D are all smokers. Miss H finds tobacco smoke allergic and consecutively the offices next to hers are occupied by non-smokers. Unless specifically stated all the employees maintain an atmosphere of silence during office hrs. The ideal candidate to occupy office farthest from Mr. B will be i. Miss H ii. Mr. M iii. Mr. T iv. Mr. D The three employees who are smokers should be seated in the offices i. 1 2 4 ii. 2 3 6 iii. 1 2 3 iv. 1 2 3 The ideal office for Mr. M would be i. 2 ii. 6 iii. 1 iv. 3 In the event of what occurrence within a period of one month since the assignment of the offices would a request for a change in office be put forth by one or more employees? i. Mr D quitting smoking ii. Mr. T taking over duties formally taken care of by Miss R iii. The installation of a water cooler in Miss H’s office iv. Mr. B suffering from anemia Direction for Qn 24-25 Elle is 3 times older than Zaheer. Zaheer is ½ as old as Waheeda. Yogesh is elder than Zaheer. What is sufficient to estimate Elle’s age? i. Zaheer is 10 yrs old ii. Yogesh and Waheeda are both older than Zaheer by the same no of yrs. iii. Both of the above iv. None of the above Which one of the following statements can be inferred from the info above i. Yogesh is elder than Waheeda ii. Elle is older than Waheeda iii. Elle’s age may be less than that of Waheeda iv. None of the above
Two trains 200 miles apart are traveling toward each other along the same track. Two trains have the same speed 100MPH. A bee is hovering just above the nose of the first train. It buzzes from the first train to the second train, turns around immediately, flies back to the first train, and turns around again. It goes on flying back and forth between the two trains until they collide. If the bee's speed is twice the speed of two trains, how far will it travel?
A single discount equivalent to three successive discounts of 20%, 25% and 10% is a) 55% b) 50% c)48% d)46% plz specify the method... thanks
21 Answers ABC, Arihant, Ashok Leyland, CTS, DELL, Hyundai, Mahindra Comviva, PSTET, SSC, TATA,
The Bulls, Pacers, Lakers and Jazz ran for a contest. Anup, Sujit, John made the following statements regarding results. � Anup said either Bulls or Jazz will definitely win � Sujit said he is confident that Bulls will not win � John said he is confident that neither Jazz nor Lakers will win When the result cameit was found that only one of the above three had made a correct statement. Who has made the correct statement and who has won the contest.
some people went for vaction. unfortunately it rained for 13 days when they were there. but whenever it rained in the morning, they had clean afternood and vice versa. In all they enjoyed 11 morning and 12 afternoons. how many days did they stay there totally
English 
