# Quiz Discussion

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what is the price of each of these two books?

Course Name: Quantitative Aptitude

• 1] Rs. 5, Rs.7.50
• 2] Rs. 8, Rs. 12
• 3] Rs. 16, Rs. 10
• 4] Rs. 12, Rs. 14
##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

The average age of 3 children in a family is 20% of the average age of the father and the eldest child. The total age of the mother and the youngest child is 39 years. If the father's age is 26 years, what is the age of the second child ?

• 1] 15 years
• 2] 18 years
• 3] 20 years
• 4] Cannot be determined
##### Solution
2
Discuss

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is-

• 1] 1 : 2
• 2] 2 : 3
• 3] 3 : 4
• 4] 3 : 5
##### Solution
3
Discuss

Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included , the average is increased by 1 kg. The weight of the teacher is ?

• 1] 76 kg
• 2] 77 kg
• 3] 74 kg
• 4] 75 kg
##### Solution
4
Discuss

The average of the first 100 positive integers is-

• 1] 49.5
• 2] 50.5
• 3] 51
• 4] 100
##### Solution
5
Discuss

The average of x number is y and average of y numbers is x. Then the average of all the numbers taken together is

• 1]

(x+y)/2xy

• 2]

2xy/(x+y)

• 3]

(x2+y2)/(x+y)

• 4]

xy/(x+y)

##### Solution
6
Discuss

19 people went to a hotel for combine dinner party 13 of them spent Rs. 79 each on their dinner and rest spent 4 more than the average expenditure of all the 19. What was the total money spent by them.

• 1] 1628.4
• 2] 1534
• 3] 1492
• 4] 1496
• 5] None of these
##### Solution
7
Discuss

A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points the team scored was :

• 1] 672
• 2] 665
• 3] 645
• 4] 588
##### Solution
8
Discuss

The average of five different positive numbers is 25. x is the decrease in the average when the smallest number among them is replaced by 0. What can be said about x?

• 1] x is less than 5
• 2] x is greater than 5
• 3] x is equal to 5
• 4] Cannot be determined
##### Solution
9
Discuss

When the average age of a couple and their son was 42 years, the son married and got a child after one year. When the child was 5 years old, the average age of the family became 36 years. What was the age of daughter-in- law at the time of their marriage ?

• 1] 23 years
• 2] 24 years
• 3] 25 years
• 4] 26 years
##### Solution
10
Discuss

The average of 6 numbers is 7. The average of three numbers of them is 5. What will be the average of remaining numbers?

• 1] 15
• 2] 30
• 3] 9
• 4] 42
# Quiz