Question

2.From the following data find out D2 D7 and D9
80-90 90-100
70-80
60-70
0-10
10-20
30-40
20-30
40-50
50-60
Wages in
(Rs)
No. of
Workers
0
1
1
2
6
4
25
14
9
18.​

Answer 1

Answer:

What is this i am not understand this question...