Hello and welcome to exampundit. Here is a set of Quantitative Aptitude Quiz on Average based problems with Shortcut Solutions for Prelims exam of SBI Clerk 2018.
1. The sum of 68 numbers is 3474. The average of first 22 numbers is 61 and that of last 19 numbers is 44. What will be the average of remaining number?
1) 44
2) 48
3) 46
4) 50
5) 52
2. Average weight of three boys P,T and R is 54 and 1/3 kgs, while the average weight of three boys T, F and G is 53 kgs. What is the average weight of p, T, R , F and H?
1) 53.8
2) 52.4
3) 53.2
4) Can’t be determined
5) None of these
3. The average marks obtained by Mithun In Sanskrit, Science and social science was 68. But erroneously the marks in Science is taken as 72 instead of 81. The maximum mark of each subject was 120. Find the percentage of marks obtained by Mithun in nearest integer.
1) 60
2) 59
3) 61
4) 55
5) None of these
4. The average age of a man and his son is 48 years. The ratio of their ages is 11 : 5 respectively. What will be the ratio of their ages after 6 years?
1) 6: 5
2)5:3
3) 4:3
4) 2:1
5) None of these
5. The average weight of 48 students of a class was 54 kg. After 4 new students joined the class, its average weight increased by 2.5 kg. What is the average weight of 4 new students who joined the class?
1)82
2) 80
3) 84.5
4) 88.5
5) 86.5
6. Average weight of 19 men is 74 kg and the average weight of 38 women is 63 kg. What is the average weight (rounded off to the nearest integer) of all the men and women together?
1) 59
2) 65
3) 69
4) 67
5) 71
7. The average of four consecutive odd numbers P, Q, r and S respectively is 104 (increasing order). What is the ratio of sum of P and R to the sum of Q and S?
1) 105:103
2) 130: 150
3) 113:115
4) 123: 125
5) None of these
8. The average weight of 45 students in a class was calculated as 36 kg. It was found that the weight of two students in the class was wrongly calculated. The actual weight of one of the boys in the class was 32 kg, but it was calculated as 34 kg and the weight of another boy in the class was 45 kg whereas it was calculated as 40 kg. What is the actual average of the 45 students in the class? (Rounded off to two digits after decimal)
1) 36.07
2) 36.16
3) 35.84
4) Can’t be determined
5) None of these
9. The average score of 29 students of a class in a History test is 68 (out of 120). After removing the top 3 scores, the average score drops by 2.5. If the second highest score is less than 85 and the second highest and the third highest scores are not the same, the highest score should be at least what value?
1) 96
2)98
3) 106
4) 108
5) 102
10. The average of five positive numbers is 470. The average of first two numbers is 720 and the average of the last two numbers is 150. What is the third number?
1) 612
2) 610
3)600
4) 510
5) None of these
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