Answer / krishna kanth reddy

3 hours from 1A.M....That means upto early morning 4 A.M

Answer / rajesh

let the height of the candles be 4 ft
2 hr half of the thin candle lit now height 2 ft.
again 1 hr lit makes the thin candle 1 ft.
but the thick candle lasts 6 hr
in three hour it lits half of its height so 2 ft remaining
so the candles were lit three hours
till 4 am he used the candles

Answer / asdff

ya 4 am is the rite answer...

Answer / sravanthi

he studied for 3 hours means he studied upto 4A.M

Answer / pavi

3 hrs

Answer / priyanshu gupta

let no. of hrs b x
it is given The thick candle is supposed to last six hours
and the thin one two hours less.
so 6-x=2(4-x)
6-x=8-2x
2x-x=8-6
x=2

so he studied 2 hrs in candle light.

Answer / sanjay sudheer

Both have the same length (i.e, say L in meters 'm')
Thick candle melting rate (L/6) of units m/hr
Thick candle melting rate (L/4) of units m/hr
Assume the time after which the given condition is satisfied (That is after 'h' hours)
[L- [(L/6)*h] ] = 2* [L- [(L/4)*h] Solve we will end up with 3hrs
h=3 hrs;
This is the condition for any variable length of the candle;
Try with candle lengths of for easy understanding (i.e., 4, 12, 24 etc) u will endup with same condition { thick candle is twice lengthy than the thin one}

Answer / vivek

IN response to above answer
What if we assume the height of the two candles to be 6 ft??

Answer / rajini

Yes,ofcourse the answer is 2hrs only i.e 3 A.M.

Answer / rohit solanki

Let both of their height be x.
For every hour thin will burn x/4 of x and thick will burn x/6 of x.
After 3 hrs remaining thin will be x - 3*x/4 = x/4 and
remaining thick will be x - 3*x/6 = x/2
Thus after 3 hrs thick will be twice of thin x/2 = 2(x/4)
hence solved.

in a family there are 5 members viz. parents and 3 children. the member are A,B,C,D AND E out of which 2 are males and 3 are females. A has 3 childerns, 2 daughters and 1 son. c in B's son. A in D's father. 1.how is E related to B? 2.who is D's mother? give me solution plese.

2 Answers  

1..Potatoes are made up of 99% water and 1% "potato matter." Jack bought 100 pounds of potatoes and left them outside in the sun for a while. When he returned, he discovered that the potatoes had dehydrated and were now only made up of 98% water. How much did the potatoes now weigh? 2..One boy can eat 100 chocolates in half a minute, and another can eat half as many in twice the length of time. How many chocolates can both boys eat in 15 seconds? 3..In the Olympic Games, the flags of six nations were flown on the masts in the following way. The flag of America was to the left of Indian tricolour and to the right of the flag of France. The flag of Australia was on the right of the Indian flag but was to the left of the flag of Japan, which was to the left of the flag of China. Find the two flags which are in the centre.

10 Answers   CTS, MBA, Ramco,

2-3 ques on GDP growth rate ?

0 Answers   ONGC,

Consider a chessboard with a single Rook. A Rook can move any number of square sideways/forward, but not diagonally. What is the minimum number of moves the Rook needs to make, in order to pass over all the squares on the chessboard and return to the original position?

5 Answers  

Please send SBI Model exam question Paper for Clerical exam sir

2 Answers  

Because cigars cannot be entirely smoked, a Bobo who collects cigar butts can make a cigar to smoke out of every 3 butts that he finds. Today, he has collected 27 cigar butts. How many cigars will he be able to smoke?

2 Answers  

There are 3 persons X, Y and Z. On some day, X lent tractors to Y and Z as many as they had. After a month Y gave as many tractors to X and Z as many as they have. After a month Z did the same thing. At the end of this transaction each one of them had 24. Find the tractors each originally had?

1 Answers  

A rich man died. In his will, he has divided his gold coins among his 5 sons, 5 daughters and a manager. According to his will: First give one coin to manager. 1/5th of the remaining to the elder son. Now give one coin to the manager and 1/5th of the remaining to second son and so on..... After giving coins to 5th son, divided the remaining coins among five daughters equally. All should get full coins. Find the minimum number of coins he has?

5 Answers  

There are 10 statements written on a piece of paper: 1. At least one of statements 9 and 10 is true. 2. This either is the first true or the first false statement. 3. There are three consecutive statements, which are false. 4. The difference between the numbers of the last true and the first true statement divides the number, that is to be found. 5. The sum of the numbers of the true statements is the number, that is to be found. 6. This is not the last true statement. 7. The number of each true statement divides the number, that is to be found. 8. The number that is to be found is the percentage of true statements. 9. The number of divisors of the number, that is to be found, (apart from 1 and itself) is greater than the sum of the numbers of the true statements. 10. There are no three consecutive true statements. Find the minimal possible number?

1 Answers  

Q. Right to information flows from which of the following Articles: (a) Articles 19 & 20 (b) Articles 21 & 22 (c) Articles 19 & 21 (d) Articles 14 & 19

6 Answers   PSU,

My friend collects antique stamps. She purchased two, but found that she needed to raise money urgently. So she sold them for Rs. 8000 each. On one she made 20% and on the other she lost 20%. How much did she gain or lose in the entire transaction?

3 Answers   Wipro,

consider 3 by 3 matrix & take 1-9 numbers but not repeat the numbers add each row and column then each row and column has the answer 13 how?

4 Answers