Ques:- a group of friends goes for dinner and gets bill of Rs 2400 . Two of them says that they have forgotten their purse so remaining make an extra contribution of Rs 100 to pay up the bill. Tell the no. of person in that group
Recent Answer : Added by Admin On 2020-05-17 11:59:54:
Let ‘x’ be the number of perons in the group and let ‘y’ be
amount per head which they have to pay.
Then xy = 2400.
or y = 2400/x
Since two friends have forget the purse, x-2 persons should
share the total amount(2400).
If they share, they have to make an extra contribution of
Rs 100 to pay up the bill
That is x-2 persons should pay y+100 each
or (x-2)(y+100) = 2400
or y+100 = 2400/(x-2)
or y = 2400/(x-2) – 100
Therefore we have got two equations namely,
y= 2400/x and y = 2400/(x-2) – 100
Comparing these two, we get
2400/x = 2400/(x-2) – 100
Solving this we get
x^2 – 2x -48 = 0
or (x-8) (x+6) = 0
or x = 8 or x = -6
Since ‘x’ denote the number of persons, it should be
positive.
So, x = 8.
Ques:- City A population is 68000, decreasing at a rate of 80 per year City B having population 42000 increasing at a rate of 120 per Year. In how many years both the cities will have same population
Recent Answer : Added by Admin On 2020-05-17 11:59:22:
130 years
Ques:- Write ten numbers from the least to the greatest which have a remainder 3 after dividing by seven. What is the series formed and what is the CD
Ques:- Qualification & Family Background? Total years of Experience? Why want to leave current Job.
Ques:- How many hydra is needed for lifting the D-Shakle of 20 ton capacity ?
Ques:- P and Q can do a piece of work in 3 days, Q and R in 4 days, R and P in 6 days. How long will R take to do it?
Recent Answer : Added by anyonmos On 2021-07-14 14:32:04:
2 and half day.
Ques:- Tom has three boxes with fruits in his barn: one box with apples, one box with pears, and one box with both apples and pears. The boxes have labels that describe the contents, but none of these labels is on the right box. How can Tom, by taking only one piece of fruit from one box, determine what each of the boxes contains?
Ques:- A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long?
A. 65 sec
B. 79 sec
C. 89 sec
D. 99 sec
Recent Answer : Added by GAYATHRI On 2023-03-14 17:27:09:
240-24
650-?
?=24*650/240
65SEC
Ques:- A person has to cover the fixed distance through his horses. There are five horses in the cart. They ran at the full potential for the 24 hours continuously at constant speed and then two of the horses ran away to some other direction. So he reached the destination 48 hours behind the schedule. If the five horses would have run 50 miles more, then the person would have been only 24 hours late. Find the distance of the destination.
Recent Answer : Added by Admin On 2020-05-17 12:04:22:
150 miles
Ques:- Are you willing to work in shifts and sign bonds?
Ques:- What is your long term and Short Term goal
Ques:- What do you know about us or our company?
Ques:- A software engineer has the capability of thinking 100 lines of code in five minutes and can type 100 lines of code in 10 minutes. He takes a break for five minutes after every ten minutes. How many lines of codes will he complete typing after an hour?
Recent Answer : Added by Vishal Panjabrao Kokare On 2022-05-17 08:54:15:
15 min 100 line
30 min 200 lines + 15 min rest total 45 min +5 min think +5 min write + 5 min rest
250 line code will be done
Ques:- A part of certain sum of money is invested at 9% per annum and the rest at 12% per annum, if the interest earned in each case for the same period is equal, then ratio of the sums invested is?
Recent Answer : Added by uma On 2022-02-20 07:56:22:
3;4
Ques:- What is my present role in the company?
Ques:- Why looking for a change
Ques:- Out of 80 coins, one is counterfeit. What is the minimum number of weighings needed to find out the counterfeit coin?
Recent Answer : Added by Keagan Jagers On 2022-08-14 16:31:15:
79
Ques:- Why you want to leave your job?
Ques:- A can swim & cross 50m(the length of swimming pool) in 2 min. B can swim & cross 50m in 2min 15sec. Every time when they meet a bell gong is struck. For 2000m how many bell sounds might be produced?
Recent Answer : Added by Admin On 2020-05-17 12:02:01:
If the bell rung when they r started is also counted then it
will be 5 otherwise 4
Ques:- Motivation to shift from Delhi to Pune?
Ques:- How does this job fit in with your overall career goals?
Ques:- Your total experience?
Ques:- The incomes of two persons A and B are in the ratio 3:4. If each saves Rs.100 per month, the ratio of their expenditures is 1:2 . Find their incomes?
Recent Answer : Added by srikanth On 2022-03-09 16:41:20:
50 each
3x -y = 100
4x-2y = 100
Ques:- A person has 60 pens. He sells some of these at a profit of 12% and the rest at 8% loss. On the whole, he gets a profit of 11%. How many pens were sold at 12% profit and how many at 8% loss?
A. 54
B. 57
C. 58
D. 60
Recent Answer : Added by Anon On 2022-08-14 16:31:46:
57 and 3
12 x 57 = 684
-8 x 3 = -24
684 – 24 = 660
660/ 60 = 11
Ques:- Why you changed your sector FMCG to Telecom?
Ques:- What did you leave your last job?
Ques:- How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?
Recent Answer : Added by Bhoomi Patel On 2021-08-19 17:24:21:
speed of the train respect to man
= (63 – 3) km/hr
= 60 km/hr
= 60 * 1000 / 3600 m/sec
= 50/3 m/sec
time
= distance/speed
= 500 * 3/ 50
= 30 sec
Ques:- How to convince HR you are suitable for this job despite technical expertise?
Recent Answer : Added by Pranita Patnaik On 2022-12-20 12:54:04:
I have been teaching some students for 1 year.
Ques:- What are the time bound deliveries?
Ques:- Find the odd man out:
385, 462, 572, 396, 427, 671, 264
A. 671
B. 427
C. 385
D. 264
Recent Answer : Added by Manthan Shukla On 2022-03-11 17:00:08:
427 is the answer
Because
385 means (3+5=8) or (8-3=5) ,
462 means (4+2=6) or (6-2=4) ,
572 means (5+2=7) or (7-5=2) ,
396 means (6+3=9) or (9-3=6) ,
671 means (6+1=7) or (7-6=1) ,
264 means (4+2=6) or (6-2=4) ,
but only 427 is the number in which if we do addition of any of its two digits (e.g 4+2 or 4+7) then its answer doesn’t come 3rd digit
like if we do 4+2 then answer will be 6 so the number should be 426 but it is not
or if we do 7-4 then answer will be 3 (not 2)
so the right answer is 427
Let ‘x’ be the number of perons in the group and let ‘y’ be
amount per head which they have to pay.
Then xy = 2400.
or y = 2400/x
Since two friends have forget the purse, x-2 persons should
share the total amount(2400).
If they share, they have to make an extra contribution of
Rs 100 to pay up the bill
That is x-2 persons should pay y+100 each
or (x-2)(y+100) = 2400
or y+100 = 2400/(x-2)
or y = 2400/(x-2) – 100
Therefore we have got two equations namely,
y= 2400/x and y = 2400/(x-2) – 100
Comparing these two, we get
2400/x = 2400/(x-2) – 100
Solving this we get
x^2 – 2x -48 = 0
or (x-8) (x+6) = 0
or x = 8 or x = -6
Since ‘x’ denote the number of persons, it should be
positive.
So, x = 8.