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ATQ, 1728 + (17 × 2) = 1762 1762 + (16 × 3) = 1804 1804 + (15 × 4) = 1854 1854 + (14 × 5) = 1912 1912 + (13 × 6) = 1982 Therefore, '1982' should come in place of '1978'.
The average age of a group of 50 students is 16 years. If 3 students whose ages are 18 years, 26 years, and _____ years are replaced by 3 new students w...
The average of four numbers is 200. Two of the numbers are equal (not least), and 70 more than the least number. If the 4th number is four times the lea...
In a company, the average age of 40 employees is 20 years. When the ages of two managers, one 'a' years old and the other 'a + 10' years old, are includ...
The average number of books on history, polity and geography in a library is 110, and the average number of books on history and geography is 120. If th...
The average age of 20 children and their teacher's age are 18 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
The cost of packaging of the oranges is 15% the cost of fresh oranges themselves. The cost of oranges increased by 35% but the cost of packaging decreas...
In an examination, the average marks obtained by the students is 85. After correcting the quantitative mistakes, the average of 100 students is reduced ...
The income of B is 85% of A and income of C is Rs 3600 more than that of B. The average income of all three together is Rs. 8400. A and B spend 50% of t...
The average age of A and B is 22 years. If A is to be replaced by C, the average would be 21 years. The average age of C and A is 23 years. Find the age...
Average run scored by a batsman in 14 innings is 80. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases ...
