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:- A man gets x/y of Rs.10 and y/x of Rs.10. He returns Rs.20. The Answer choices are a) He may not lose b) He may lose c) He always loses d) Cannot be Determined
Recent Answer : Added by Admin On 2020-05-17 12:02:08:
x and y can be equal to 1..
If so,then he gets 1/1 of Rs.10 which is equal to 10 and
again 1/1 of Rs.10=Rs.10..so,he gets total of 20..and
returns 20..so,no gain and no loss..
If x=1,y=2,he gets, 5+20=25..and returns 20..so he may not
lose..
So,whatever be the values of x and y,only these two answers
are possible..
so its a)He never loses..
Ques:- A merchant has three different types of milk: 435 liters, 493 liters and 551 liters. Find the least number of casks of equal size required to store all the milk without mixing.
Ques:- What is you done in your graduation?
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Ques:- Find out the wrong number in each sequence:
125, 123, 120, 115, 108, 100, 84
A. 84
B. 100
C. 115
D. 123
Recent Answer : Added by narendra On 2022-09-18 09:01:32:
b
Ques:- Why you want to leave your current organization??please don't write, looking for good salary.. it can be negative..i am searching a Right sentence..plz suggest…
Ques:- The food in a camp lasts for 30 men for 40 days. If ten more men join, how many days will the food last?
Ques:- Find out the wrong number in the series:
64, 71, 80, 91, 104, 119, 135, 155
A. 71
B. 80
C. 104
D. 135
Recent Answer : Added by Anjun On 2022-08-24 17:03:38:
135 is wrong because from starting difference between 7 after that 9 after 11 ,13,17 and so on
Ques:- In pure milk if 20% replaced by water and in this again 20% is replaced by water and again 20% is replaced by water then what is the proportion of milk in that mixture
Ques:- Diffrence between banking domain and medical domain
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Ques:- The average of 10 numbers is 23. If each number is increased by 4, what will the new average be?
Recent Answer : Added by Rajeswari Suresh On 2021-10-10 19:03:42:
avg of 10nos.=23==>23*10=230
if each no increased by 4 ==> 4*10=40
then new avg is giveen by : 230+40=270
270/10=27
hence the new avg =27
Ques:- A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?
Recent Answer : Added by Admin On 2022-09-29 16:19:13:
Explanation:
72 — 9
? —- 1
=> Down Stream = 8
45 —- 9
? —- 1
=> Up Stream = 5
Speed od current S = ?
S = (8 – 5)/2 = 1.5 kmph.
Ques:- ‘Mango’ is related to ‘Fruit’ in the same way as ‘Potato’ is related to
Recent Answer : Added by Admin On 2020-05-17 12:03:24:
( d ) Root
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 : Added by Amelia On 2022-08-24 17:03:31:
X= pigeon
Y= hares
X+Y= 200
2x+4y=580
By solving y= 90
X=110
So Hares= 90
Ques:- Which of the following names is not associated with Shoes :
A. Denim
B. Lotus Bawa
C. Mescos
D. Phoenix
Ques:- A goods train runs at the speed of 72 km/hr and crosses a 250 m long platform in 26 sec. What is the length of the goods train?
Recent Answer : Added by Madhumati On 2021-11-13 11:02:30:
224
Ques:- Communication system
Ques:- An article is bought for Rs.600 and sold for Rs.500, find the loss percent?
Ques:- 2598Successive discounts of 20% and 15% are equal to a single discount of (a) 30%(b) 32% (c) 34% (d) 35% (e) 36
Ques:- Which state in India has the largest coastline?
A. Orissa
B. Gujarat
C. Tamilnadu
D. Andhra Pradesh
Recent Answer : Added by Parth Satish Laturia On 2022-08-14 16:44:46:
gujarat
Ques:- If instead of multiplying a number by 7 the number was divided by 7. What should be the percentage error?
Recent Answer : Added by Rushi Maralkar On 2023-04-27 17:34:11:
% error= (new no-actual no)/actual no *100
% error= [(x/7)-7x]/7x * 100
% error= 48x/49x * 100
% error= 0.9795*100=97.95
Ques:- Tell me something about you & your experience?
Ques:- Do you think you are u fit for this job
Ques:- In acolony there are some families. Each of them have children butdifferent in numbers.Following are conditions a> no of adult>no of sons>no of daughters>no of families. b>each sister must have atleast one brother and should have at the most 1 sister. c> no of children in one family exceeds the sum of no of children in the rest families. Tell the no of families?
Recent Answer : Added by Admin On 2020-05-17 11:59:49:
Three families
Ques:- In a race if A beat B by 15m, A beat C by 25m and in a race between B and C, B beat C by 15m.Find the length of the tracks.
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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.