- A9
- B11
- C \begin{equation} 11 \frac{1}{9} \end{equation}
- D\begin{equation} 11 \frac{2}{9} \end{equation}
Average - Quiz
- A20.5
- B19.5
- C15.6
- D17.4
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Quiz Analytics
Average - Quiz
Guest User
Time Taken: Questions: Answered: Not Answered:
Correct Answer:
Wrong Answer:
Percentage: %
- A. 9
- B. 11
- C. \begin{equation} 11 \frac{1}{9} \end{equation}
- D. \begin{equation} 11 \frac{2}{9} \end{equation}
Remarks:
Explanation: \begin{array}{l}
=\frac{2+3+5+7+11+13+17+19+23}{9} \\
=\frac{100}{9} \\
=11 \frac{1}{9}
\end{array}
- A. 38
- B. 39.8
- C. 42.5
- D. 31.4
Remarks:
Explanation:
There are five prime numbers between 30 and 50. This statement provides information about the quantity and range of prime numbers being considered. They are 31, 37, 41, 43, and 47. This list enumerates the prime numbers that fall within the specified range. Therefore the required average=(31+37+41+43+47)5=1995 =39.8
- A. 20.5
- B. 19.5
- C. 15.6
- D. 17.4
Remarks:
Explanation:
To find the average of the first 40 natural numbers,
the sum of these numbers is calculated using the formula
"sum of first n natural numbers=n(n+1)/2",
which yields a sum of 820.
The average is then calculated by dividing this sum by the total number of numbers,
resulting in an average of 20.5
- A. 31
- B. 34
- C. 32
- D. 33
Remarks:
Explanation:
Let A, B, and C represent their individual weights. Then: A + B + C = 45 kg * 3 = 135 kg A + B = 40 kg * 2 = 80 kg B + C = 43 kg * 2 = 86 kg B = (A + B) + (B + C) - (A + B + C) = (80 kg + 86 kg - 135 kg) = 31 kg
- A. 18
- B. 72
- C. 71
- D. 60
Remarks:
Explanation:
The total weight increase when the new man replaces one of the crew members is 1.8 kg/person * 10 people = 18 kg. The weight of the new man is 53 kg + 18 kg = 71 kg.
- A. 80
- B. 94
- C. 98
- D. 68
Remarks:
Explanation:
The total marks obtained by Sohan in six subjects is 444,
and the total marks obtained by him in five subjects excluding science is 350.
Therefore, the marks obtained by Sohan in science are 444 - 350 = 94.
- A. 4000
- B. 5000
- C. 3000
- D. 2000
Remarks:
Explanation:
Rakesh's monthly income is Rs. 4000. To find this, we can use the following steps:
The total income of Rakesh and Suresh is 10100.
The total income of Suresh and Ramesh is 12500.
The total income of Rakesh and Ramesh is 10400.
Adding these three equations gives us 2(P + Q + R) = 33000 or P + Q + R = 16500.
Subtracting the equation for Suresh and Ramesh from this equation gives us P = 4000.
Therefore, Rakesh's monthly income is Rs. 4000.
- A. 20.4
- B. 18.34
- C. 17.23
- D. 15.87
Remarks:
Explanation:
The combined average of the two groups is 20.44.
To find this, we can use the following steps:
The number of quantities in group A is 10, and the number of quantities in group B is 8.
The individual average of group A is 24, and the individual average of group B is 16.
The combined total of the two groups is 10 * 24 + 8 * 16 = 240 + 128 = 368.
The total number of quantities in the two groups is 10 + 8 = 18.
Therefore, the combined average of the two groups is 368 / 18 = 20.44.
- A. 4
- B. 6
- C. 8
- D. 10
Remarks:
Explanation:
The present age of the baby can be found by using the following steps:
Calculate the total age of the family of 5 members 2 years ago: 16 years * 5 members = 80 years
Calculate the present age of the family of 5 members: 80 years + (2 years * 5 members) = 90 years
Calculate the total age of the family of 6 members, including the baby: 16 years * 6 members = 96 years
Calculate the present age of the baby: 96 years - 90 years = 6 years
- A. 4
- B. 3
- C. 2
- D. 1
Remarks:
Explanation:
Age of the younger child=3 years
Solution
Total age 4 members,10 years ago=(24×4)=96
Total age of 4 members now=(98+10×4)=136
Total age of 6 members now=(24×6)=144
Sum of the ages of 2 children=(144-136)=8 years
Let the age of the younger child be x years
Then the age of the elder child=(x+2)
so,. x+x+2=8
2x=6. x=3
Age of the younger child=3 years