241⟩ Bobby weighs 160 lbs more than his sister maria. Their combined weight is 200lbs. How many lbs does bobby weigh?
let Bobby's weight be x lbs.
then Maria's weight will be (x-160) lbs.
so, x+x-160= 200
hence x= 180 lbs.
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332 Aptitude Questions And Answers
242⟩ There are 100 pieces of zigzags(don t bother of zig zag) which can be combined two at a time discretely or with a unit of some zigzag. How many such combination are necessary to make a single whole unit?
Please share your answers.
243⟩ When you reverse the digits of age of father you will get the age of son. One year ago the age of father was twice that of sons age. What are the current ages of father and son?
Current Age:
Father Age should be - 73 Years
son age will be - 37 Years (Reversal of Father Age)
One Year Before:
Father Age is 72 Years(Double of Son's age)
Son Age is - 36 Years
244⟩ There is a book with some number of papers with numbers on the book were cut. So a boy counts the number of pages and given numbers to that book. He got 3 digit numbers 61 times. Then find the number of pages in that book?
160 ........ie (100 to 160) therefore total 61 times
so the anser is 160
245⟩ Pipes are laid by an oil company. If the company has to lay down 3km of pipes and each pipe is 25 meters long, calculate and print the number of pipes needed to cover the distance?
I presume "cober" is a typo for "cover".
3km of pipes is 3000 meters.
3000 meters divided by each pipe length of 25 meters is 120.
Experience and prudence dictates that the oil company should acquire 126 pipes so that there will be no slow-down in the event of breakage or defects. But that's probably not really part of the question.
246⟩ In the 20th century there is a year, which does not change if viewed upside down. Which is the year?
Answer is 1661 which is same as 1661 after reversing..
247⟩ A, B and C start at the same direction to run around a circular stadium. A completes a round in 252 sec, B in 308 sec and C in 198 sec, all starting at the same point. After what time will they meet again at the starting point?a)26min 18secb)42min 36secc)45mind)46min 12 sec
The answer is the L.C.M of 252, 308, 198
=2772=46 min 12 sec
248⟩ There are two poles of equal height 15mts. One cable with length 16mts is hanging between that two poles. The height from center of the cable to earth is 7mts then what is the distance between that two poles?
No distance. because if the cable is in 7 mts above on ground means the 16 mts cable is placed up and down(8mts+8mts).
249⟩ Ram travels by car from city A to city B heading towards north in 4 hours. From there he travels west to City C in 3 hours. Say his average speed is same during both the courses. Now from C he travels back to A in shortest path possible. How much time he would had taken to reach A from C?
1 hrs
A is the south point, in the question towards north 4hrs and then to C point in west for 3hrs. So, from west to south the time required is 1 hrs
250⟩ If we have to weigh 31 kgs of rice using only 1 kg stone. What are the minimum number of weighing operations required?
5 weighing operations:
Rice Counter weight
==== ==============
1kg (1kg stone)
2kg (1kg rice + 1kg stone)
4kg (1+2+1)
8kg (1+2+4+1)
16kg (1+2+4+8+1)
================
total: 31kg rice
251⟩ Some boys are standing in a row, Suresh is 10th from right and Amar is seventh from left. If there are five boys in between Suresh and Amar, How many boys are there in the row?
Ans 10 boys
1(suresh) 2 3 4 5 6 7(amar) 8 9 10
252⟩ All fat people are not dancers, food loving people are all fat .Find the contradictory statement?
As we see on the reality show weight does not affect dancing. Their inner power motivates them, and also self confidence is require to face some problem during dancing. For Example, Bharati in Zalak Dikhlaja on Colors TV.
253⟩ A mixture of 50 liters of milk and water contain 10% of water. How much water must be added to make water 20% in the given mixture?
That's wrong, realize as you add water to the mixture, the volume of the mixture increases as well. Thus if you added 10 ltr of water to the 50 ltr mixture you would get a 60 ltr mixture. made of 45 ltr milk and 15 ltr water. That's 25% water in the mixture, not the 20% water being asked.
So, from the start:
m = Milk
w = Water
x = amount of water to add
For the mixture without any additional water:
w = 5 ltr
m = 45 ltr
Thus :
(45 + (5 + x)) - ((45 + (5 + x)) * 8/10) = (5 + x)
(50 + x) - ((50 + x) * 8/10) = (5 + x)
(50 + x) - (40 + (x * 8/10)) = (5 + x)
(50 + x) = (5 + x) + (40 + (x * 8/10))
50 + x = 45 + x + (x * 8/10)
50 = 45 + (x * 8/10)
5 = x * 8/10
5 * 10/8 = x
6.25 = x
The new mixture = 56.25 ltr
And 20% of 56.25 = 11.25 ltr = 5 (original amount) + 6.25 (amount of water added)
Thus, How much water must be added to make water 20% in the given mixture?
6.25 ltr water
254⟩ After 10 years A will be twice the age of B before 10 years and now if the difference is 9 years between them then what is the age of B after 10 years?
Let present ages of A and B be x and y respectively.
According to the question
x+10 = 2(y-10) after solving we get
x-2y = -30 eq. (1)
x-y = 9 eq. (2) after solving above equation we will get there present ages as such A = 48 and B = 39.
After 10 years B will be 49 yrs
255⟩ There are 5 Sub with equal high marks. Mark scored by a boy is 34567 (Not sure). If his total aggregate if 3/5 of the total of the highest score, in how many subjects has he got more than 50%?
It is cleanly mentioned in question that he has scored 3 subjects
256⟩ One year payment to the servant is Rs. 200 plus one shirt. The servant leaves after 9 months and receives Rs.120 and a shirt.Then find the price of the shirt.A. Rs. 80B. Rs. 100C. Rs. 120D. Cannot be determined
Price of Shirt is RS.150.
Explanation:
Let d price of shirt be X
12=200+X
9=120+X
adding above two eqns we get
X=150
Logically if we put the above answer to the problem, we get the problem solved.....
257⟩ Obtain 20 using two threes. (You can use any mathematical sign or operation)
(3!)c3=20
3!=3*2*1=6
6c3=(6*5*4)/(3*2*1)=20
258⟩ 30,28,25,20,34,28,? What is the next number in the above Sequence?
ans=29
3*10=30
4*7=28
3*8=25
4*5=20
3*11=33+1=34
4*7=28
3*9=27+2=29
so like(one digrement and one ingrement valu than adding 1,2,3etc... Ingremented)
259⟩ 4 horses are tethered at 4 corners of a square plot of side 63 meters so that they just cannot reach one another. the area left ungrazed is (a)675.5 (b)780.6 (c)785.8 (d)850.5
A square field has a side of 63 meters. what is the area of this field.
260⟩ If A can copy 50 pages in 10 hours and A and B together can copy 70 pages in 10 hours, how much time does B takes to copy 26 pages?
A can copy 50 pages in 10 hrs.
A can copy 5 pages in 1hr.(50/10)
now A & B can copy 70 pages in 10hrs.
thus, B can copy 90 pages in 10 hrs.[eqn. is (50+x)/2=70, where x--> no. of pages B can copy in 10 hrs.]
so, B can copy 9 pages in 1hr.
therefore, to copy 26 pages B will need almost 3hrs.
since in 3hrs B can copy 27 pages.
