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Mathematics Quiz on Average:04.05.2020

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Question 1

What will be the average marks of class V in Mathematics where students got the marks as given below?

0, 24, 30, 31, 45, 39, 21, 26, 42, 36, 49, 29

Question 2

Directions: Answer the following questions by selecting the most appropriate option.
A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?

Question 3

The average height of 27 persons was recorded as 162 cm. If the height of Raju’ was deleted from the observation, the average height was reduced by 1 cm. What was Raju’ height?

Question 4

The mean of five numbers is 27. If one number is excluded their mean is 25, then excluded number is?

Question 5

Directions: Answer the following questions by selecting the most appropriate option.
A student has gotten the following grades on his tests: 87, 95, 76, and 88. He wants an 85 or better overall. What is the minimum grade he must get on the last test in order to achieve that average?

Question 6

The mean of 20 numbers is 55. If two numbers 45 and 30 are removed, the new mean of the remaining numbers is:

Question 7

In a class, 12th student’s scores 63 marks and there by increases in class average marks by 2. What is the average mark of class after including the marks of 12th student?

Question 8

The average speed of a car is 12/5 times the average speed of a bus. Also, a tractor covers 450 km in 18 hours. If the speed of the bus is double to that of the speed of tractor then how much distance will the car cover in 6 hours?

Question 9

The average of five numbers is 25. If the average of first two numbers is 21 and that of last two numbers is 19, what is the third number from starting?

Question 10

The average age of four boys A, B, C and D is 10 years and the average age of A, B, D, E is 10 years and C is 8 years old. The age of E is (in years).
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