Oct 25, 2010

What is the relation?

A father is 4 times his son's age. And in 30 years son's age will be half of his father's age. How old are the father and son now???

Answer: 
Son's age : 15
Father's age : 60


Explanation:
The ratio of the father and son's age is now 4 to 1 and 30 years from now it will be 2 to 1. The period of thirty years equals the difference of the two ratios or 2 to 1. Therefore, 30*2 = 60, the father's age and (1/2) * 30 = 15, the son's age.

Find out no. of days.

A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in??

Answer:
45(or)221days.
22




Explanation:
Ratio of times taken by A and B = 1 : 3.
The time difference is (3 - 1) 2 days while B take 3 days and A takes 1 day.
If difference of time is 2 days, B takes 3 days.
If difference of time is 60 days, B takes3x 60= 90 days.
2
So, A takes 30 days to do the work.
A's 1 day's work =1
30
B's 1 day's work =1
90
(A + B)'s 1 day's work =1+1=4=2
30909045
 A and B together can do the work in45= 221days.
22

Oct 24, 2010

What is the journey length?

A train travels at an average speed of 40kmph to reach its destination. But at d speed of 35kmph it reaches 15min late. wat's the journey length?

Answer: 
70km

Oct 23, 2010

What is the relation?

A girl introduces a boy that he is my father's mother's son-in-law's son. How the girl related to the boy?

Answer: 
Cousin

Oct 22, 2010

Find out the next no.

Try this...
9 = 4, 21 = 9, 22 = 9, 24 = 10, 8 = 5, 7 = 5, 99 = 10, 100 = 7, 16 = ?, 17 = ?


Answer:   
16 = 7
17 = 9


Explanation:
The numbers on the right hand side signifies the number of letters in the spelling of the numbers on the left hand.
Eg: 16(Sixteen) = 7
      17(Seventeen) = 9

Oct 21, 2010

How many times will it flash??

If a light flashes every 6 seconds, how many times will it flash in 3/4of an hour?


Answer: 
451 times.
Explanation:
There are 60 minutes in an hour.
            In ¾ of an hour there are (60 * ¾) minutes  = 45 minutes.
                        In ¾ of an hour there are (60 * 45) seconds = 2700 seconds.
            Light flashed for every 6 seconds.
                        In 2700 seconds 2700/6 = 450 times.
The count start after the first flash, the light will flashes 451 times in ¾ of an hour.

Who was the second?

5 boys were climbing a hill. J was following H. R was just ahead of G. K was between G & H. They were climbing up in a column.Who was the second?



Answer:
G.
            Explanation:
            The order in which they are climbing is R – G – K – H – J    

What is the relation?

Introducing a boy, a girl said, "He is the son of the daughter of the father of my uncle." How is the boy related to the girl?

Answer:Brother
Explanation:
The father of the boy's uncle → the grandfather of the boy and daughter of the grandfather → sister of father.

Oct 19, 2010

How many times do the hands of a clock coincide in a day?

How many times do the hands of a clock coincide in a day?

Answer:
22

Explanation:
The hands of a clock coincide 11 times in every 12 hours (Since between 11 and 1, they coincide only once, i.e., at 12 o'clock).
AM
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55


PM
12:00
1:05
2:11
3:16
4:22
5:27
6:33
7:38
8:44
9:49
10:55

The hands overlap about every 65 minutes, not every 60 minutes.
The hands coincide 22 times in a day.

What will be the time?

If time at this moment is 9 P.M., what will be the time 23999999992 hours later?

Answer :
1 P.M


Explanation
  24 billion hours later, it would be 9 P.M. and 8 hours before that it would be 1 P.M.