The average score of a class of boys ...

The average score of a class of boys and girls in an examination is `A` . The ratio of boys and girls in the class is 3 : 1. If the average score of the boys is `A+1` , the average score of the girls is `A-1` (b) `A-3` (c) `A+1` (d) `A+3`

`(A-1)`

`(A-3)`

`(A+3)`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

AVERAGE
S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET|10 Videos
AVERAGE
S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET|10 Videos
AREA AND PERIMETER OF RHOMBUS, TRAPEZIUM AND POLYGONS
S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet-25 (Chapters 25 and 26)|10 Videos
CIRCLES
S CHAND IIT JEE FOUNDATION|Exercise UNIT TEST - 4 |25 Videos

Similar Questions

Explore conceptually related problems

Let the average score of a class of boys and girls in an examination be p. The ratio of boys and girls in the class is 3: 1. If the average score of the boys is (p + 1), then what is the average score of the girls?

The average score of 42 students in a test is 69. The ratio of the number of boysto that of girls is 10 : 11. The average score of the boys is 20% more than that of the girls. The average score of the boys is :

If the ratio of boys to girls in a class is B and the ratio of girls to boys is G, then 3 (B + G) is :

The average score of 84 students (boys and girls) in a test is 57 . The ratio of the number of boys to that of girls is 10 : 11 . The average score of boys is 20% less than that of girls. What is the average score of girls in the test?

The average weight of a class of 15 boys and 10 girls is 38.4 kg . If the average weight of the boys is 40 kg, then what is the average weight of the girls ?

S CHAND IIT JEE FOUNDATION-AVERAGE-QUESTION BANK

X has twice has much money as thast of y and y has 50% of more money t...
Text Solution
|
The average score of two serctions is 28. The average score of section...
Text Solution
|
The average age of father and his two sons is 27 years. Five years ago...
Text Solution
|
The average marks obtained by five students A,B,C,D and E is 52(3)/(5)...
Text Solution
|
In an examination, a pupils average marks was 63 per paper. If he h...
Text Solution
|
The average of marks of 28 students in Mathematics was 50. Eight stude...
Text Solution
|
The average of 11 players of a cricket team is decreased by 2 month...
Text Solution
|
The average monthly salary of the workers in a workshop is Rs. 8500. i...
Text Solution
|
The average age of 30 boys in a class is 15 years. One boy aged 20 yea...
Text Solution
|
3 years ago, the average age of a family of 5 members was 17 years. A ...
Text Solution
|
The average annual income (in Rs) of certain agricultural workers i...
Text Solution
|
The average monthly income of P and Q is Rs 5050. The average mo...
Text Solution
|
the average of four positive integers is 72.5. the highest integer is...
Text Solution
|
The average score of a class of boys and girls in an examination is...
Text Solution
|
Of the four members, the first is twice the second, the second is o...
Text Solution
|
The average temperature of the town in the first four days of a mon...
Text Solution
|
A company produces on an average 4000 items per month for the first...
Text Solution
|
The average of 5 consecutive numbers is m. if the next three natural n...
Text Solution
|
The average weight of 3 men A ,\ B and C is 84 kg. Another man D...
Text Solution
|
The batting average for 40 innings of a cricket player is 50 runs. ...
Text Solution
|