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• A man bought 13 articles at Rs 70 each. 15 at Rs 60 each and 12 at Rs 65 each. The average price per article is1). Rs60.252). Rs64.753). Rs65.754). Rs62.25
• The average age of 45 persons is decreased by $\frac{1}{9}$ year when one of them of 60 years is replaced by a new comer. Then the age of the new comer is :1). 45 years2). 55 years3). 59 years4). 49 years
• The average mathematics marks of two Sections A and B of Class IX in the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratio of the number of students of Section A and B is1). 7:82). 7:53). 8:74). 8:5
• A student finds the average of 10, 2-digit numbers. If the digits of one of the numbers is interchanged,the average increases by 3.6. The difference between the digits of the 2-digit numbers is1). 42). 33). 24). 5
• If the average of eight consecutive even numbers be 93.then the greatest number among them is1). 1002). 863). 1024). 98
• Out of seven given numbers,the average of the first four numbers is 4 and that of the last four numbers is also 4.If the average of all the seven numbers is 3.fourth number is1). 32). 43). 74). 11
• The average of six numbers is 20. If one number is removed, the average becomes 15. What is the number removed 1). 52). 353). 1124). 45
• The mean of 9 observations is 16. One more observation is included and the new mean becomes 17.The 10th observation is1). 92). 163). 264). 30
• What is the average of the first six (positive) odd numbers each of which is divisible by 71). 422). 433). 474). 49
• A man’s pension on retirement from service is equal to half the average salary during last 3 years of his service.His salary from 1-1-1983 is Rs380 per month with increment of Rs40 due on 1-10-83, 1-10-84 and 1-10-85.If he retires on 1-1-86,what pension does he draw per month1). 2052). 2153). 2254). 230