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Question 1
The ratio of ducks and frogs in a pond is 37: 39 respectively. The average number of ducks and frogs in the pond is 152. What is the number of frogs in the pond?
Question 2
What is the average of the following numbers?
112, 102, 133, 116 and 127
112, 102, 133, 116 and 127
Question 3
The total of the ages of 75 class girls is 1050, the average age of 25 of them is 12 yr and that of another 25 is 16 yr. Find the average age of the remaining girls.
Question 4
The average weight of 15 girls was recorded as 54 kg. If the weight of the teacher was added, the average increased by two kg. What was the teacher's weight?
Question 5
The average mark secured by 36 students was 52. But it was discovered that an item 64 was misread as 46. What is the correct mean of marks?
Question 6
Half of Sonu’s monthly income is equal to four-seventh of Rajiv’s monthly income. Rajni’s monthly income is Rs. 32000 which is double the monthly income of Sonu. What is Rajiv's monthly income?
Question 7
The average of seven consecutive positive integers is 26. The smallest of these integers is:
Question 8
The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26. The correct average is
Question 9
Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of the eight given numbers is:
Question 10
The average of 27 numbers is 60. If one number is changed from 28 to 82 the average is:
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Nov 2SSC & Railway
