Question

Find the missing frequency'x' in this data, given that the arithmetic
mean is 28.
Profits
0-10
10-20
20–30
30-40
40-50
50-60
No. of shops
12
18
27
x
17
6
A) 15 B) 12 C) 20 D)24​

Answer 1

Answer:

C

Step-by-step explanation:

28=2100+35x/80+x

28(80+x)=2100+35x

2240-2100=35x-28x

140=7x

140/7=x

20=x