Average Questions Practice Question and Answer
8 Q: The average of five numbers is 27. If one number is excluded. The average becomes 25. The excluded number is
867 05ec4ab748463ff0219023e19
5ec4ab748463ff0219023e19- 125false
- 227false
- 330false
- 435true
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Answer : 4. "35"
Q: The average of 11 results is 50. If the average of first six results is 49 and and that of last six is 53, find the sixth result? 1384 05d19cc8e7619fe30b9d34583
5d19cc8e7619fe30b9d34583- 156false
- 262true
- 350false
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Answer : 2. "62"
Explanation :
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Q: Subjects, there were 9 boys and some girls. In a test, the mean score obtained by the boys was 13 while that obtained by the girls was 15. If the overall average was 14.28, what was the total number of students in the class?
1574 05dc118bcb0e9c27a7e27c0d7
5dc118bcb0e9c27a7e27c0d7- 124false
- 226false
- 327false
- 425true
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Answer : 4. "25"
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 ? 1313 05b5cc6c9e4d2b4197774df83
5b5cc6c9e4d2b4197774df83- 142 yrsfalse
- 245 yrstrue
- 336 yrsfalse
- 438 yrsfalse
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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? 1647 05d19cd2c1388cd24f0860eea
5d19cd2c1388cd24f0860eea- 1148.8 cmfalse
- 2149.2 cmfalse
- 3148.4 cmtrue
- 4144 cmfalse
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Answer : 3. "148.4 cm"
Explanation :
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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? 1131 05d19d2be1388cd24f0860ef5
5d19d2be1388cd24f0860ef5- 14 yearsfalse
- 23 yearsfalse
- 32 yearsfalse
- 41 yearstrue
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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. 1075 05d19dc981388cd24f0860f15
5d19dc981388cd24f0860f15- 14.5false
- 25false
- 32false
- 44true
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Answer : 4. "4"
Explanation :
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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
2178 05de49793848f4a29cf45b0de
5de49793848f4a29cf45b0de- 1Rs 4200true
- 2Rs 4500false
- 3Rs 5600false
- 4Rs 6000false
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