Read- Average: Basic Concepts, Formulas
6. The average of 12 results is 15, and the average of the first two is 14. What is the average of the rest?
(a) 71/5
(b) 15
(c) 76/5
(d) 14
7. The average temperature for Monday, Tuesday and Wednesday was 40°C. The average for Tuesday, Wednesday and Thursday were 41°C., and that for Thursday being 45°C. What was the temperature on Monday?
(a) 42 °C
(b) 50 °C
(c) 45 °C
(d) 40 °C
8. A batsman has a certain average of runs for 16 innings. In the 17th innings, he makes a score of 85 runs, thereby increasing the average by 3, what is the average before the 17th innings?
(a) 30
(b) 32
(c) 34
(d) 35
9. Three years ago, the average age of Raj and Rahim was 18 years. With Shubham joining them now, their average age became 22 years. How old is Shubham now?
(a) 27
(b) 28
(c) 24
(d) 25
10. The average of 2, 7, 6 and x is 5 and the average of 18, 1, 6, x and y is 10. What is the value of y?
(a) 20
(b) 30
(e) 10
(d) 5
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