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:- A rectangular courtyard, the sides of which are in the ratio of 4:3, cost Rs.600 for paving at 50 p per m2; find the length of the diagonal of the courtyard?
Recent Answer : :
5
Ques:- A and B started a business jointly. A’s investment was thrice the investment of B and the period of his investment was two times the period of investment of B. if B received Rs. 4000 as profit, then their total profit is
A. Rs. 16,000
B. Rs. 24,000
C. Rs. 28,000
D. Rs. 32,000
Recent Answer : :
C
Ques:- In what way can your render your optimum service to Vodafone Mobile if given the opportunity to work with us?
Ques:- What was the last major problem that you were confronted with? What action did you take on it?
Ques:- The average salary of a person for the months of January, February, March and April is Rs.8000 and that for the months February, March, April and May is Rs.8500. If his salary for the month of May is Rs.6500, find his salary for the month of January?
Recent Answer : :
4500 sal of jan
Ques:- A contractor agreeing to finish a work in 150 days, employed 75 men each working 8 hours daily. After 90 days, only 2/7 of the work was completed. Increasing the number of men by ________ each working now for 10 hours daily, the work can be completed in time.
Recent Answer : :
225
Ques:- consider expresion ‘ab’ . what happens when ‘a’ is divided by ‘c’ & ‘b’ is multiplied by ‘c’.
Recent Answer : :
exactly
Ques:- 1. Last exp. 2. Part time or full time
3. Typing speed 4. Why you wish to join?
Ques:- In each questions below are given two statements followed by two conclusions numbered I and II.
Statements :
Some men are educated. Educated persons prefer small families.
Conclusions :
I. All small families are educated.
II. Some men prefer small families.
Statements :
Some men are educated. Educated persons prefer small families.
Conclusions :
I. All small families are educated.
II. Some men prefer small families.
A. if only conclusion I follows
B. if only conclusion II follows
C. if either conclusion I or II follows
D. if neither conclusion I nor II follows
E. if both conclusions I and II follow
Ques:- Rs.800 amounts to Rs.920 in 3 years at simple interest. If the interest is increased by 3%, it would amount to how much?
Ques:- Personal background & qualification.
Ques:- The ratio fo Boys to Girls is 6:4. 60% of the boys and 40% of girls take lunch in the canteen. What % of class takes lunch in canteen.
Recent Answer : :
assume the ratio 6:4 to be 60:40
boys taking lunch in canteen=60% of 60=36
Girls taking lunch in the canteen=40% of 40=16
Total boys and girls taking lunch in the canteen=52
Total students we assumed is 60+40=100
Therefore percentage of boys and girls taking lunch in the canteen=(52/100)*100=52%
Ques:- What is supply chain?
Ques:- What specifically do you do to set an example for your employees?
Ques:- The greatest four digit number which is exactly divisible by each one of the numbers 12, 18, 21 and 28
A. 9288
B. 9828
C. 9882
D. 9928
Recent Answer : :
9828
Ques:- Tell about yourself and your career?
Ques:- A train running at the speed of 60 km/hr crosses a pole in 9 sec. What is the length of the train?
Recent Answer : :
speed = distence / time
60km/hr=distance / 9 sec
km / hr to m / s==> 60*1000 / 1* 3600 = 16.667
16.667*9 = distance
150 m is the answer
Ques:- The sum and the product of two numbers are 25 and 144 respectively, Find the difference of the number is?
Recent Answer : :
9 and 16
Ques:- What is the angle between the two hands of a clock when time is 8:30
Recent Answer : :
180*2/3 = 60degree
Ques:- What if the interviewer ask that we are offering 8000 only but if another company is offering 10000 would you like to go?
Ques:- Asked what is your future planing?
Ques:- What would you do for us? What can you do for us thatsomeone else can't?
Recent Answer : :
Creative mind and innovative ideas is what I can offer to you. Please have a look at my work portfolio. I do not copy anyone’s work, I do not try to imitate the work of other creators. Gaining my inspiration from everyday life
Ques:- Which one of the following numbers is divisible by 3?
A. 2345678
B. 2876423
C. 4006020
D. 9566003
Recent Answer : :
The correct ANS: option C
Ques:- Where from do you belong?
Ques:- If in a certain language, NATURE is coded as MASUQE, how is FAMINE coded in that code ?
Recent Answer : :
EALIME
Ques:- Each side of a rectangle is increased by 100% .By what percentage does the area increase?
Recent Answer : :
400%
e.g:-
l = 5 b = 2
Area= l*b =10
New after 100% increament
l=10 b = 4
Area = 10*4
Ques:- A,B,C,D,E and F are a group of friends. There are two house wives, one professor , one engineer, one accountant and one lawyer in the group.There are only two married couples in the group. The lawyer is married to D, who is a housewife. No women in the group is either an engineer or an accountant. C, the accountant, is married to F, who is a professor. A is married to housewife. E is not a housewife. How many members of the group are males?
Ques:- What is the GDP growth of India?
Ques:- A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be
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.