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Quant Quiz on Average for SSC Exam
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Question 1
The average age of Amit and Aadya is 12.5 years. If Amit is to be replaced by Chama, the average age would be 12.5 years. The average age of Chama and Amit is 13 years. Then, ages of Amit, Aadya and Chama in order(in years) are
Question 2
The weight of seven students of a class is recorded as 54 kg, 78 kg, x kg, 82 kg, 67 kg, 42 kg and 75 kg. If the average weight of all the seven students is 63 kg, then the value of x
Question 3
The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crew, who weights 42 kg is replaced by a new man. Find the weight of the new man (in kg).
Question 4
The average height of 21 girls was recorded as 148 cm. When the teacher's height was included, the average of their heights increased by 1 cm. What was the height of the teacher?
Question 5
Pranav, Sanjay and Madan are three brothers. Pranav and Sanjay are twins. The sum of the ages of Pranav and Sanjay is same as that of Madan alone. Three years earlier the ratio of age of Pranav and Madan was 2 : 7. What will be the age of Sanjay 3 years hence?
Question 6
3 yr ago, the average age of a family of 5 members was 17 yr. A baby having been born, the average age of the family is the same today. The present age of the baby is:
Question 7
A tabulator while calculating the average marks of 100 students of an examination, by mistake enters 68, instead of 86 and obtained the average as 58; the actual average marks of those students?
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Sep 4SSC & Railway
