Ques:- A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:
Ques:- About company & related to requirement.
Ques:- Find the simple interest on Rs.500 for 9 months at 6 paisa per month?
Recent Answer : :
Answer:270
Explanation: Formula is SI= P*R*T/100
Where P is principal amount
R is Rate
T is Time
So, SI= 500*6*9/100
i.e SI= 27000/100
SI= 270
Ques:- 6*12*15 is the volume of some material. How many cubes of edge 3 can be inserted into it?
Recent Answer : :
ans: 40
6/3*12/3*15/3=40
Ques:- Least perfect square number, exactly divisible by 21, 36 and 56 is?
Ques:- Sum of two consecutive nos is 55, larger one is?
Recent Answer : :
Let the firt number be n,
The largest number will be n+1
Their sum
n+n+1=55
2n+1=55
2n=54
n=27
Largest number =27+1=28
Ques:- There are some pigeons and hares in a zoo. If heads are counted, there are 200. If legs are counted, there are 580. The number of hares in the zoo is?
Recent Answer : :
X= pigeon
Y= hares
X+Y= 200
2x+4y=580
By solving y= 90
X=110
So Hares= 90
Ques:- A girl has 55 marbles. She arranges them in n rows. The nth row consists of n marbles, the (n-1)th row consists of (n-1) marbles and so on. What are the number of marbles in nth row?
Recent Answer : :
answer 10
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Ques:- A person starts from his house and walks 2km straight and then takes a right turn and walks for 1km and again takes a right turn and walk for another 1km. now if he is in north – west direction from his house; find out the direction in which he has started from the house?
Recent Answer : :
West
Ques:- Why do you want to work in BPO?
Ques:- A number exceeds by 25 from its 3/8 part. Then What is the number ?
Recent Answer : :
40
Ques:- How many member in your family and where is your father working?
Ques:- Speak on your unforgettable or memorable day for two minutes?
Ques:- There are some chicken in a poultry. They are fed with corn One sack of corn will come for 9 days.The farmer decides to sell some chicken and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30 days. So initially how many chicken are there?
Recent Answer : :
answer :36
Ques:- It's always 1 to 6, it's always 15 to 20, it's always 5, but it's never 21, unless it's flying. What is this?
Recent Answer : :
Dice
Ques:- Who among the following has been won the title of Miss India Universe 2009 ?
Ques:- Excluding stoppages, the speed of a train is 45 kmph and including stoppages it is 36 kmph. Of how many minutes does the train stop per hour?
Ques:- What is the motto inscribed under our national emblem?
Ques:- A family X went for a vacation. Unfortunately it rained for 13 days when they were there. But whenever it rained in the mornings, they had clear afternoons and vice versa. In all they enjoyed 11 mornings and 12 afternoons. How many days did they stay there totally?
Recent Answer : :
Yes answer is 18 days
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Ques:- Given a triangle, how do you divide it into 5 triangles of equal area?
Ques:- What was the last seminar you attended? How did you apply this new-found knowledge towards your work?
Ques:- What do you mean by sensex and nifty?
Ques:- Discuss the acceptance of Corporate Social Responsibility in business by Indian companies in recent years. Justify your answer by giving present practices.
Ques:- There are some chickens in a poultry. They are fed with corn. One sack of corn will come for 9 days. The farmer decides to sell some chickens and wanted to hold 12 chicken with him. He cuts the feed by 10% and sack of corn comes for 30…
Recent Answer : :
answer : 36 –Explaination:
X= Chickens
Y = Qty per day
X*Y*9= 12 *.9 *Y*30
x=36
Ques:- Describe a time when you took extra effort to make sure the person with whom you were communicating with had really understood your point. How did you do this?
Ques:- The sides of a cube are in the ratio 1:2 the ratio of their volume is?
Ques:- Tell us something about you?
Hint: Assume that the speed of the stream is x and the speed of the boat in still water is x. From the statement of the question form two equations in two variables x and y. This system is reducible to linear equations in two variables. Reduce the system to a system of linear equations in two variables by proper substitutions. Solve the system of equations using any one of the methods like Substitution method, elimination method, graphical method or using matrices. Hence find the value of x satisfying both the equation. The value of x will be the speed of the stream.
Complete step-by-step answer:
Let the speed of the stream be x, and the speed of the boat in still water be y.
We have the speed of the boat upstream = y-x.
Speed of the boat downstream = y+ x.
Now since it takes 14 hours to reach a place at a distance of 48 km and come back, we have the sum of the times taken to reach the place downstream and time taken to return back upstream is equal to 14.
Now, we know that time =Distance speed
Using, we get
Time taken to reach the place =48y+x and the time taken to return back =48y−x.
Hence, we have
48y+x+48y−x=14
Dividing both sides by 2, we get
24y+x+24y−x=7 —–(i)
Also, the time taken to cover 4km downstream is equal to the time taken to cover 3km upstream.
Hence, we have 4y+x=3y−x
Transposing the term on RHS to LHS, we get
4y+x−3y−x=0 ——– (ii)
Put 1y+x=t and 1y−x=u, we have
24t+24u=7 ——-(iii)4t−3u=0 ——–(iv)
Multiplying equation (iv) by 6 and subtracting from equation (iii), we get
24t−24t+24u+18u=7⇒42u=7
Dividing both sides by 42, we get
u=742=16
Substituting the value of u in equation (iv), we get
4t−3(16)=0⇒4t−12=0
Adding 12 on both sides, we get
4t=12
Dividing both sides by 4, we get
t=18
Reverting to original variables, we have
1y+x=18 and 1y−x=16
Taking reciprocals on both sides in both equations, we have
y+ x=8 ——- (v)y−x=6 ——–(vi)
Adding equation (v) and equation (vi), we get
2y=14
Dividing both sides by 2, we get
y=7.
Substituting the value of y in equation (v), we get
7+x=8
Subtracting 7 from both sides we get
x = 8-7 =1
Hence the speed of the stream is 1 km/hr.