Home
Class 12
MATHS
The mean income of a group of workers is...

The mean income of a group of workers is `bar(x)` and that of another group is `bar(y)`. If the number of workers in the second group is 10 times the number of workers in the first group, then the mean income of the combined group is :

A

`(bar(x) + 10 bar(y))/(5)`

B

`(bar(x) + 10 bar(y))/(11)`

C

`(10 bar(x) + bar(y))/(11)`

D

`(bar(x) + 10 bar(y))/(9)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • STATISTICS

    MODERN PUBLICATION|Exercise LATEST QUESTIONS FROM AIEEE/JEE EXAMINATIONS|6 Videos

  • STATISTICS

    MODERN PUBLICATION|Exercise QUESTION FROM KARNATAKA CET & COMED|3 Videos

  • STATISTICS

    MODERN PUBLICATION|Exercise QUESTION FROM KARNATAKA CET & COMED|3 Videos

  • SOLUTION OF TRIANGLES

    MODERN PUBLICATION|Exercise Latest questions from AIEE/JEE Examinations|5 Videos

  • THREE DIMENSIONAL GEOMETRY

    MODERN PUBLICATION|Exercise Recent Competitive Questions (RCQs)|10 Videos

Similar Questions

Explore conceptually related problems

The number of ovservations in a group is 40. If the average of first 10 is 4.5 and that of the remaining 30 is 3.5, then the average of the whole group is :

The number of secondary alcoholic group in glycerol is

the number of subgroups of the group (Z_(5),o+_(5)) is

The mean of a set of numbers is bar(x) . If each number is increased by lambda , then mean of the new set is :

The element with atomic number 35 lies in group

A group (G,*) has 10 elements. The minimum number of elements of G, which are their own inverses is

The mean weight of a group of 9 students is 19 kg. If a boy of weight 29 kg is joined in the group, then find the mean weight of 10 students.

The period and group number of an element with atomic number 7 are