Q. The average of seven results is 5; the average of first three is 3, and that of the last three is 7. The fourth result is
1) 6
2) 5
3) 4
4) 3
Q. The average of 10 numbers is 7. If each number is multiplied by 12, then the average of the new set of numbers is
1) 7
2) 19
3) . 82
4) 84
Q. The average age of 30 students is 9 years. If the age of their teacher is included, it becomes 10 years. The age of the teacher is
1) 27 years
2) . 31 years
3) 35 years
4) 40 years
Q. The average of four consecutive even numbers is 27. The largest of these numbers is
1) 36
2) 32
3) 30
4) 28
Q. The average of five consecutive prime numbers starting from 3 is
1) 6.8
2) . 7.0
3) . 7.8
4) 8.0
Q. Anil is four years older than Nikhil at present. After four years the ratio of their age will be 3:2. What is Nikhil age at present?
1) 8 years
2) 4 years
3) 6 years
4) Data inadequate
Q. If the length and breadth of a rectangle field are increased. The area increased by 50% if the length increased by was 20% by what percentage was breadth increased.
1) 25%
2) 30%
3) 20%
4) Data inadequate
Q. Aditya salary is 80% of Amit salary and 120% of Rajiv salary. What is Amit salary if Raju salary is 30,000.
1) 40000
2) 45000
3) 50000
4) 55000
Q. In a class 60% of the students pass in Hindi and 45% pass in Sanskrit if 75% of them pass in atleast one subject. What percentage of the student fails in both subjects?
1) 80%
2) 20%
3) 25%
4) 75%
Q. An arc contains 23% copper to get 69 kg of copper the quality of the arc required is
1) 200
2) 250
3) 300
4) None of these
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