Question

2 points
11. If the class mark of a class
is 10 and the class width is 6,
then find the class.
O 6-10
O 6-13
O 7-13
O None of these
answer please
​

Answer 1

Answer:

2 points

11. If the class mark of a class

is 10 and the class width is 6,

then find the class.

O 6-10

O 6-13

O 7-13

O None of these

answer please

​

Explanation:

Answer 2

Answer:

let lower term of class be X and upper term be Y

class mark = X + Y/ 2

10 = X + Y/2

20 = X + Y .... (1)

class width = Y - X

6 = Y - X .... (2)

On subtracting equation (2) from (1)

20 - 6 = X + Y - Y + X

14 = 2X

X = 14/2

X = 7 = lower limit

on putting X in equation (2)

6 = Y - X

6 = Y - 7

Y = 7 + 6 = 13 = upper limit

Ans. Class = 7 - 13

PLZ MARK AS BRIANLIEST AND THX FOR THE SUPERB QUESTION