### Kunal bought 65 books for Rs. 1050 from one shop and 50 books for Rs. 1020 from another. What is the average price he paid per book?

**A.** Rs. 18

**B.** Rs. 18.20

**C.** Rs. 24

**D.** Rs. 36.40

## Show Answer

###
Answer-A

Solution-

__Solution(By Apex Team)__

$\begin{array}{l}\text{Total money paid for 115 books}\\
\text{= Rs. (1050 + 1020)}\\
\text{= Rs. 2070}\\
\text{∴ Average price paid per book}\\
=\text{Rs.}\left(\frac{2070}{115}\right)\\
=\text{Rs.}\ 18\end{array}$

- A grocer has a sale of Rs. 6435, Rs. 6927…
**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?****Answer: Option A**## Show Answer

Solution(By Apex Team)

Total sale for 5 months = Rs. (6435 + 6927 + 6855 + 7230 + 6562) $\begin{array}{l}\text{= Rs. 34009}\\ \text{∴ Required sale}\\ \text{= Rs. [(6500 × 6) – 34009]}\\ \text{= Rs. (39000 – 34009)}\\ \text{= Rs. 4991}\end{array}$

## Related Questions On Average

### Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average19 people went to a hotel for combine dinner party 13 by 8 runs. His new average is:

A. 20

B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18

B. 20

C. 24

D. 30

### In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?

A. 10 years

B. 10.5 years

C. 11 years

D. 12 years

### If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is.

A. a = b = c

B. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12

## More Related Questions On Average

- In a one-day cricket match the captain of one.
**In a one-day cricket match the captain of one of the teams scored 30 runs more than the average runs scored by the remaining six batsman of that team who batted in the match. If the total runs scored by all the batsmen of that team were 310, how many runs did the captain score?****Answer: Option C**## Show Answer

Solution(By Apex Team)

Let the average score of the remaining 6 batsmen be x runs. Then, sum of their scroe = 6x Captain’s score = (x + 30) ∴ 6x + (x + 30) = 310 ⇒ 7x = 280 ⇒ x = 40 Hence, captain’s score = x + 30 = 70

## Related Questions On Average

### Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average19 people went to a hotel for combine dinner party 13 by 8 runs. His new average is:

A. 20

B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18

B. 20

C. 24

D. 30

### In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?

A. 10 years

B. 10.5 years

C. 11 years

D. 12 years

### If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is.

A. a = b = c

B. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12

## More Related Questions On Average

- In an examination, a pupil’s average mark was 63
**In an examination, a pupil’s average mark was 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?****Answer: Option D**## Show Answer

Solution(By Apex Team)

$\begin{array}{l}\text{Let the number of paper be x}\\ \text{Then, pupil’s total score = 63x}\\ \begin{aligned}&\therefore\frac{63x+20+2}{x}=65\\ &\Rightarrow2x=22\\ &\Rightarrow x=11\end{aligned}\end{array}$

## Related Questions On Average

### Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average19 people went to a hotel for combine dinner party 13 by 8 runs. His new average is:

A. 20

B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18

B. 20

C. 24

D. 30

### In a family, the average age of a father and a mother is 35 years. The average age of the father, mother and their only son is 27 years. What is the age of the son?

A. 10 years

B. 10.5 years

C. 11 years

D. 12 years

### If the arithmetic mean of 0, 5, 4, 3 is a, that of -1, 0, 1, 5, 4, 3 is b and that of 5, 4, 3 is c, then the relation between a, b, and c is.

A. a = b = c

B. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12

## More Related Questions On Average

- The average of 8 numbers is 20. The average of first..
**The average of 8 numbers is 20. The average of first two numbers is $15 \Large\frac{1}{2}$ and that of the next three is $21 \Large\frac{1}{3}$. If the sixth number be less than the seventh and eighth numbers by 4 and 7 respectively, then the eight number is-****Answer: Option C**## Show Answer

Solution(By Apex Team)

Let the eight number be x Then, sixth number = (x – 7) Seventh number = (x – 7) + 4 = (x – 3) So, $\begin{aligned}&\Leftrightarrow\left(2\times15\frac{1}{2}\right)+\left(3\times21\frac{1}{2}\right)+(x-7)+(x-3)+x=8\times20\\ &\Leftrightarrow31+64+(3x-10)=160\\ &\Leftrightarrow3x=75\\ &\Leftrightarrow x=25\end{aligned}$

## Related Questions On Average

B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18

B. 20

C. 24

D. 30

B. 10.5 years

C. 11 years

D. 12 years

B. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12

## More Related Questions On Average

- While calculating the average of a batsman as 36 in 100
**While calculating the average of a batsman as 36 in 100 matches that he played, one of the scores 90 was incorrectly noted as 40. The percentage error is-****Answer: Option D**## Show Answer

Solution(By Apex Team)

$\begin{array}{l}\text{Correct sum}\\ \text{= 36 × 100 + 90 – 40}\\ \text{= 3650}\\ \text{Correct average}\\ =\left(\Large\frac{3650}{100}\right)\\ \text{= 36.5}\\ \text{Error = (36.5 – 36) = 0.5}\\ \text{∴ Error %}\\ \begin{aligned}&=\left(\frac{0.5}{36.5}\times100\right)\%\\ &=\frac{100}{73}\%\\ &=1.36\%\end{aligned}\end{array}$

## Related Questions On Average

B. 21

C. 28

D. 32

### Find the average of all the numbers between 6 and 34 which are divisible by 5.

A. 18

B. 20

C. 24

D. 30

B. 10.5 years

C. 11 years

D. 12 years

B. a : b : c = 3 : 2 : 4

C. 4a = 5b = c

D. a + b + c = 12

## More Related Questions On Average