Hand picked material and question banks

Latest Popular RatedShowing Page 22 of 30Total Questions 233 Join Examsbook

Q:
The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12^th Number is 13 less than the 13^th number , and the 14^th number is one more than the 13^th number, then the average of 12^th and 14^th number is:
1452 0

Answer : 3. "39"

Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1350 0

Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _(I) and (x+y)/2 = 30 => x+y = 60 years____(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1678 0

Answer : 3. "148.4 cm"
Explanation :
undefined

Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1166 0

Answer : 4. "1 years"

Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1099 0

Answer : 4. "4"
Explanation :
undefined

Q:
There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs 4800 and the mean salary of the male employees is Rs 5000, then the mean salary of the female employees is
2200 0

Answer : 1. "Rs 4200"

Q:
The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?
1234 0

Answer : 4. "60% "

Q:
The average of 19 numbers is 24. If each number is multiplied by 3, what is the new average?
987 0

Q: The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12th Number is 13 less than the 13th number , and the 14th number is one more than the 13th number, then the average of 12th and 14th number is: 1452 05f2e6b156bb2fc29b22c6a29

Answer : 3. "39"

Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1350 05b5cc6c9e4d2b4197774df83

Answer : 2. "45 yrs" Explanation :Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _______(I) and (x+y)/2 = 30 => x+y = 60 years__________(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1678 05d19cd2c1388cd24f0860eea

Answer : 3. "148.4 cm" Explanation :undefined

Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1166 05d19d2be1388cd24f0860ef5

Answer : 4. "1 years"

Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1099 05d19dc981388cd24f0860f15

Answer : 4. "4" Explanation :undefined

Q: There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs 4800 and the mean salary of the male employees is Rs 5000, then the mean salary of the female employees is 2200 05de49793848f4a29cf45b0de

Answer : 1. "Rs 4200"

Q: The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class? 1234 05f2a5f24cef453383f1e38ad

Answer : 4. "60% "

Q: The average of 19 numbers is 24. If each number is multiplied by 3, what is the new average? 987 0603741dc9792c13b28582120

Answer : 2. "72"

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Q:
The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12^th Number is 13 less than the 13^th number , and the 14^th number is one more than the 13^th number, then the average of 12^th and 14^th number is:
1452 0

Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1350 0

Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _(I) and (x+y)/2 = 30 => x+y = 60 years____(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: Average height of 40 girls is 148 cm. Average of remaining number is 150 cm. What will be the average of total class if there are 50 girls in the class? 1678 0

Answer : 3. "148.4 cm"
Explanation :
undefined

Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1166 0

Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1099 0

Answer : 4. "4"
Explanation :
undefined

Q:
There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs 4800 and the mean salary of the male employees is Rs 5000, then the mean salary of the female employees is
2200 0

Q:
The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?
1234 0

Q:
The average of 19 numbers is 24. If each number is multiplied by 3, what is the new average?
987 0