Question

If the class mark and class size of a class are 6 and 7 respectively, then the upper limit of the class is

Answer 1

Let X be lower limit and y be upper limit.
x+y/2=6
x+y=12 ................ (1)
y-x=7 .................... (2)
adding equations (1),(2):-
2y=19
y=9.5
putting value of y in equation (1)
x+9.5=12
x=2.5

Answer 2

Answer:

$hi \: friend \: \\ if \: the \: class \: size \: is \: 6 \: and \: 7 \: then \: the \: upper \: limit \: should \: 9$