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Average || 08.09.2021

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Question 1

A cricket batsman has a certain average of runs for his 11 innings. In the 12th innings, he made a score of 90 runs and thereby his average of runs was decreased by 5. His average of runs after 12th innings is :

Question 2

Average of 3 numbers is 12. First number is 6 less than the average of the other two. Third number is 6 more than the average of other two. What is the difference between first and third number?

Question 3

The average marks of 138 students is 65 and the average marks of 69 students of another class is 68. What will be the average if both the classes are merged?

Question 4

Sachin Tendulkar has a certain average for 11 innings. In the 12th innings he scores 120 runs and thereby increases his average by 5 runs. His new average is

Question 5

What is the arithmetic mean of first 20 odd natural numbers?

Question 6

The average of 44 consecutive odd numbers is 144.What is the largest number?

Question 7

The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of boys is 60. What is the percentage of boys in the class?

Question 8

In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she read 100 more pages at the rate of 40 pages per hour. What was her average rate of reading, in pages per hour?

Question 9

The average monthly income of X and Y is Rs. 5,050. The average monthly income of Y and Z is Rs. 6,250 and the average monthly income of X and Z is Rs. 5,200. The monthly income of X is:

Question 10

The average of sales of a furniture shop in the years 2015, 2016, 2017, 2018 is ₹16300, and that of in the years 2016, 2017, 2018, 2019 is ₹18450. If the sales in 2019 are ₹9200, then what are the sales in 2015?
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Sep 8SSC & Railway