Posted on - 12-02-2017

Bank PO

A student scored an average of 80 marks in 3 subjects: Physics, Chemistry and Mathematics. if his average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what is the marks in Physics? .

(a) 60

(b) 64

(c) 72

(d) 80

The average monthly income of X and Y is Rs.15000, that of Y and Z is Rs.16600 and that of X and Z is Rs.15400. Find the average monthly income of X, Y and Z. .

(a) Rs.15666.67 .

(b) Rs.23500 .

(c) Rs.19500 .

(d) Rs.17333.33.

A group consists of 11 men. If two men whose ages are 29 years and 31 years are replaced by two other men named Ravi and Rajesh, the average age of the group drops by one year. Find the average age of Ravi and Rajesh (in years). .

(a) 22.5 .

(b) 23.5 .

(c) 24.5 .

(d) 25.5 .

The average marks of the students of a class in an exam was 60. Had the average marks of 40 of these students been 70 instead of 50, the average marks of the class would have been 62. Find the number of students in the class. .

(a) 300

(b) 500

(c) 400

(d) 600

In a shooting tournament. 70 archers initially participated. Their average number of points is 36. if 20 archers who joined initially and whose average number of points is 40 are excluded and 30 other archers who joined later and whose average number of points is 30 are included, find the average points of the new group. .

(a) 22.4 .

(b) 25

(c) 28

(d) 32.75 .

The average weight of a group of 30 girls was 94.6 kg. One of these girls weighed 98 kg. Had her weight been 89 kg, the average weight of the group would have been .

(a) 94.9 kg .

(b) 94.8 kg .

(c) 94.4 kg .

(d) 94.3 kg .

The students of section A and section B of a class have average weights of 30 kg and kg respectively. Find the average weight of both the sections together given that the number of students in the sections A and B are in the ratio 9 : 1. .

(a) 34.5 kg .

(b) 33 kg

(c) 31.5 kg .

(d) 36 kg

In a certain company, there are two departments P and Q. The average salary of the employees in both the departments together is Rs.7000. The average salary of the employees in P is Rs.6000, and that in Q is Rs.12000. The total number of employees in P and Q together is 48. Find the number of employees in Q. .

(a) 6

(b) 8

(c) 12

(d) 16

The average score of a class of 32 students in a test was 40. When the scores of the top three students were not considered, the average score of the class was found to be 38. Find the average score of the top three scorers. .

(a) 59

(b) 59

(c) 58

(d) 58

Two solutions A and B having 30% milk and 80% milk are mixed to form a mixture which contains 50% milk. Find the ratio of the quantities of A and B mixed. .

(a) 4 : 1

(b) 3 : 5

(c) 5 : 2

(d) 3 : 2

1.D. |
2.A. |
3.C. |
4.C. |
5.D. |

6.D. |
7.C. |
8.B. |
9.B. |
10.D. |