Home
Class 7
MATHS
Average of the marks in maths of 40 stud...

Average of the marks in maths of 40 students in a class was 74 . The mean of marks for boys was 72, while their number was 21 . The mean of marks of girls in the class was

A

`35 . 8`

B

` 76 . 2 `

C

`68 . 7`

D

`86 . 5 `

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • DATA HANDLING

    MTG IIT JEE FOUNDATION|Exercise Exercise (Level - 2) Match the Following |2 Videos

  • DATA HANDLING

    MTG IIT JEE FOUNDATION|Exercise Exercise (Level - 2) Assertion & Reason Type |5 Videos

  • DATA HANDLING

    MTG IIT JEE FOUNDATION|Exercise Exercise (Level - 1) M.C.Q |35 Videos

  • CONGRUENCE OF TRIANGLES

    MTG IIT JEE FOUNDATION|Exercise Olympiad/HOTS Corner|10 Videos

  • EXPONENTS AND POWERS

    MTG IIT JEE FOUNDATION|Exercise OLYMPIAD/HOTS CORNER|15 Videos

Similar Questions

Explore conceptually related problems

The mean of he marks in Statistics of 100 students in a class was 72 . The mean of marks for boys was 75, while their number was 70. The mean of marks of girls in the class was

The table shows the marks obtained by 25 students in a class test. Find the mean of the marks obtained

The average marks of 48 students in a class is 45. the average marks of the boys in the class is 40 and average marks of the girls in the class is 50. what is the ratio between the numbers of boys and the number of girls in the class ?

The mean weight of 150 students in a certain class is 60 kg. The mean weight of the boys from the class is 70 kg, while that of girls is 55 kg. What is the number of girls in the class?

the mean weight of 150 students in a certain class is 60kg .The mean of boys in the class is 70kg and that of girls is 55kg .The number of boys and the number of girls in the class,are respectively

The mean weight of 150 students in a class is 60 kg. the mean weight of boys is 70 kg and that of girls is 55 kg. What is the number of boys in the class?

In a class of 50 students, 60% are boys. The average of marks of the boys is 62, and that of the girls is 68. What is the average marks of the whole class ?

The average marks of 50 students of a class is 76. If the average marks of all boys is 70 and that of all girls is 80 in that class, then find the number of boys in the class.