Question

27. The class mark of a class is 10 and its class width is 6. Then the lower limit of the class is
A) 5
B) 7
C) 8
D) 10 ​

Answer 1

Answer:

answer is B (7)

Step-by-step explanation:

given here to us is the class mark(upper limit +lower limit/2) =10

and width of class(upper limit-lower limit) =6

now let upper limit be x and lower limit be y.

hence, x+y/2=10

hence, x+y=2×10

=x+y=20-(1)

also, x-y =>6-(2)

add (1) &(2)

x+y+x-y=20+6

2x=26

hence, x=13

now putting x=13 in (2)

13-y=6

hence, y=7

so lower limit is 7

plss mark as brainliest.

Answer 2

Answer:

Answer is 7

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