Ques:- There are two candles of equal lengths and of different thickness. The thicker one lasts of six hours. The thinner 2 hours less than the thicker one. Ramesh lights the two candles at the same time. When he went to bed he saw the thicker one is twice the length of the thinner one. How long ago did Ramesh light the two candles?
Recent Answer : Added by Naru Mani Chandan On 2022-03-18 09:18:12:
3 hours ago.
Thin candle melts 3/4 in 3 hours leaving 1/4
Where as in the same time thick candle melts 3/6 leaving 3/6 which is 1/2. Now thick candle is exactly twice than the thin candle.
Or via modeling:
We need to find time at which the length of the thin candle is half the thick candle. Let x be the time. Thin candle melts at 1/4 an hour and thick candle melts at 1/6 an hour. In x hours they melt at x/4 and x/6 respectively. What’s left will be 1 – x/4 and 1 – x/6. We need to find x at which :
2 * (1 – (x/4)) = 1 – (x/6)
This equation results in x = 3
Ques:- In a game of billiards, A can give B 20 points in 60 and he can give C 30 points in 60. How many points can B give C in a game of 100?
Recent Answer : Added by Sanjay kumar On 2021-08-28 11:27:11:
50
Ques:- Asked about my self.
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Ques:- EDUCATIONAL BACKGROUND
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Ques:- In a certain code, BELIEF is written as AFKKDI. How is SELDOM written in that code ?
Recent Answer : Added by Nagarjuna On 2022-10-27 17:33:12:
D
Ques:- About me, about my subject and my future planning
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Ques:- Which prize is the alternative to the NOVEL Prize?
Recent Answer : Added by prakash rathore On 2021-05-28 08:49:35:
the right liveli award
Ques:- A can do a half of certain work in 70 days and B one third of the same in 35 days. They together will do the whole work in.
Recent Answer : Added by Anonymous On 2021-12-20 03:54:48:
Days taken by A to complete whole work= 140 days
Days taken by B to complete whole work= 105 days
A’s 1 day work= 1/140
B’s 1 day work= 1/105
On adding these together we get: 1/60 (1 day work by working together)
So, together they will be able to complete it in 60 days
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Ques:- The seven digits in this subtraction problem are 0, 1, 2, 3, 4, 5 and 6. Each letter represents the same digit whenever it occurs. D A D C B – E B E G is equal to B F E G.What digit is represented by each letter?
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Ques:- If a car starts from A towards B with some velocity due to some problem in the engine after travelling 30km.If the car goes with 4/5 th of its actuval velocity the car reaches B 45min later to the actual time. If the car engine fails ofter travelling 45km, the car reaches the destination B 36min late to the actual time , what is the initial velocity of car and what is the distance between A and B in km
Recent Answer : Added by DK BOSS On 2021-07-17 06:18:31:
Ans. let x is distance from A to B
and y is initial speed.
30/y+(x-30)5/4y -x/y = 3/4
=> 4x-12y=120 —-(1).
45/y + (x-45)5/4y -x/y=3/5
=> 5x-12y=225 ——-(2).
From equ (1) and equ (2) we will get.
x=25 and y=105
so initial speed is 25 km/hr
and Distance From A to B is 105 km
Ques:- A man sees a train passing over a bridge 1 km long. The length of the train is half that of the bridge. If the train clears the bridge in 2 minutes, the speed of the train is
A. 30 km/hr
B. 40 km/hr
C. 45 km/hr
D. 55 km/hr
Recent Answer : Added by Fatima On 2022-09-24 14:33:33:
45 km/hr
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Ques:- A family X went for a vacation. Unfortunately it rained for 13 days when they were there. But whenever it rained in the mornings, they had clear afternoons and vice versa. In all they enjoyed 11 mornings and 12 afternoons. How many days did they stay there totally?
Recent Answer : Added by Dhruba Jyoti Kalita On 2022-08-14 16:46:05:
Yes answer is 18 days
Ques:- A boy has Rs 2. He wins or loses Re 1 at a time If he wins he gets Re 1 and if he loses the game he loses Re 1. He can loose only 5 times. He is out of the game if he earns Rs 5. Find the number of ways in which this is possible?
Recent Answer : Added by Admin On 2022-09-28 17:58:34:
Loved by our community
17 people found it helpful
author link
NabasishGogoi
Ace
686 answers
168.2K people helped
0L -> 1 way
1L -> 3 ways
2L -> 7 ways
3L -> 4 ways
4L -> 1 way
total 16 ways
Ques:- A train of length 150 m takes 40.5 seconds to cross a tunnel of length of 300 m. The speed of the train (in km/hr) is
A. 13.33
B. 26.67
C. 38.32
D. 40
Recent Answer : Added by memo On 2023-01-10 14:35:10:
Since the total train length passed the tunnel so the distance would be the length of train added to the tunnel legth
D=150+300=450 mt.
speed = distance/time
speed = 450/(40.5/3600)
speed =40,000 mt/sec
Ques:- A computer shop consists 3 brands laptop. Laptop of brand A is sold 3/16, B is sold 1/16 and C is sold 3/4 then what fraction is sold by the shop in all.
Recent Answer : Added by jay On 2022-08-14 16:45:19:
Answer: 1 / 3
Lets say each brand had 16 laptops
So Sold : A = 3 , B= 1 and C = 12 , total sold: 16 ,
Since each brand has 16 , total = 48
so 16/ 48 = 1/3 is the sold fraction
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Ques:- You have two jars, 50 red marbles and 50 blue marbles. A jarwill be picked at random, and then a marble will be pickedfrom the jar. Placing all of the marbles in the jars, howcan you maximize the chances of a red marble being picked?What are the exact odds of getting a red marble using yourscheme?
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Ques:- X and Y invested in a business. They earned some profit which they divided in the ratio of 2 : 3. If X is invested Rs.40,000, the amount invested by Y is
A. Rs. 40,000
B. Rs. 45,000
C. Rs. 50,000
D. Rs. 60,000
Recent Answer : Added by narendra On 2022-09-18 09:03:35:
3 hours ago.
Thin candle melts 3/4 in 3 hours leaving 1/4
Where as in the same time thick candle melts 3/6 leaving 3/6 which is 1/2. Now thick candle is exactly twice than the thin candle.
Or via modeling:
We need to find time at which the length of the thin candle is half the thick candle. Let x be the time. Thin candle melts at 1/4 an hour and thick candle melts at 1/6 an hour. In x hours they melt at x/4 and x/6 respectively. What’s left will be 1 – x/4 and 1 – x/6. We need to find x at which :
2 * (1 – (x/4)) = 1 – (x/6)
This equation results in x = 3