Ques:- A is thrice as efficient as B and is, therefore, able to finish a piece of work 10 days earlier than B. In how many days A and B will finish it together?
Recent Answer : Added by Abhi Chatterjee On 2022-01-08 16:05:10:
Let n be the number of days it takes A and B, working together, to finish. And we know B=A+10 and B=3A, so:
3A=A+10
2A=10
A=5
Then B=15
So:
1/A + 1/B=1/n where n is the total amount of days. So:
1/5 + 1/15=1/n
3n+n=15
n=15/4 days
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Ques:- How can you plant 11 tree in 6 row and each row contain 4 tree?
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:- A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?
Recent Answer : Added by DK BOSS On 2021-07-15 08:16:54:
Answer: 450
Explanation:
10 * 150 = 1500
3 * 100 + 5 * 150 = 1050
1500 – 1050 = 450
Ques:- The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest)
Ques:- Sanjeev ranks seventh from the top and twenty eight from the bottom in a class. How many students are there in the class?
Recent Answer : Added by surendrakumar On 2022-08-14 16:42:36:
the answer is 34
Ques:- In a grass field, If there are 40 cows, they could eat for 40 days. If there are 30 cows, they could eat for 60 days. Than if 20 cows, How much day they could eat?
Recent Answer : Added by erf On 2022-04-02 06:59:42:
100
Ques:- A vessel is full of liquid. From the vessel, 1/3rd of the liquid evaporates on the first day. On the second day 3/4th of the remaining liquid evaporates. What fraction of the volume is present at the end of the second day
Recent Answer : Added by Padmashree J On 2021-08-23 11:42:54:
1/6
Ques:- what will be reminder after (16)^15 is devided by the 254…
A. 2
B. 0
C. 1
D. 128
Recent Answer : Added by Damodharan M On 2023-05-22 03:48:14:
I need a answers from hakuna matata questions
Ques:- Unix basics such as find, grep, pipes tees, wildcards, chmod.
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Ques:- consider expresion ‘ab’ . what happens when ‘a’ is divided by ‘c’ & ‘b’ is multiplied by ‘c’.
Recent Answer : Added by Admin On 2020-05-17 11:59:58:
value remains same
Ques:- By what % the cost of milk is increased because of inflation in December, if in October price is 30 and in next January it is 35?
Ques:- Personal, educational experience.
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Ques:- A train passes a man standing on the platform. If the train is 170 meters long and its speed is 72 kmph, how much time it took in doing so?
Ques:- If ?CERTAIN? is coded as ?XVIGZRM?, then how can ?MUNDANE? be coded in that language ? (A) NFMWZMX (B) VMZWMFN (C) NFMWZMV (D) MFMXZMV (E) None of these
Recent Answer : Added by althaf On 2022-08-14 16:31:50:
c
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Ques:- Who invented the Bikim?
A. Louis Reard
B. Samuel Reard
C. Nina Ricci
D. Joseph Lean
Ques:- Which greatest number will divide 3026 and 5053 leaving remainders 11 and 13 respectively?
A. 15
B. 30
C. 40
D. 45
Recent Answer : Added by Vijay Vinod On 2022-09-16 14:52:15:
Answer is 45
First we need to subtract those reminders from the respective numbers, then we have to find the hcf of two numbers(numbers got from the subtraction) then you will get the answer.
So,
After subtraction you will get
3026-11 = 3015
5053-13 = 5040
HCF of these two numbers
5 | 3015 5040
3 | 603 1008
3 | 201 336
| 67 112
We can’t find a common diviser since 67 is a prime number
So the HCF = 5 * 3 * 3
= 45
5*3*3 = 45
Ques:- Find the odd man out:
10, 25, 45, 54, 60, 75, 80
A. 75
B. 54
C. 45
D. 10
Recent Answer : Added by Sai On 2022-03-09 16:28:43:
54
Ques:- There N stations on a railroad. After adding X stations on the rail route 46 additional tickets have to be printed. Find N and X
Recent Answer : Added by Rishabh Gupta On 2022-03-09 16:33:47:
Each PAIR of stations means a PAIR of tickets (A to B and B to A)
Let n be the number of days it takes A and B, working together, to finish. And we know B=A+10 and B=3A, so:
3A=A+10
2A=10
A=5
Then B=15
So:
1/A + 1/B=1/n where n is the total amount of days. So:
1/5 + 1/15=1/n
3n+n=15
n=15/4 days