Question

Class 11 economics ch -19 sum 17
V Typical Problems
17. Find the Arithmetic Mean of the data given below:
Daily pocket money Below 10 20 30
(in %):
Frequency:
15 35 60
40
50
85
90
[Ans: 37 App.]
solve it​

Answer 1

Answer:

Planting more trees will add to the earth's natural beauty. Trees fight water pollution and prevent soil erosion. They prevent pollutants from flowing into water sources. The only way we can defend global warming and environmental pollution is by saving and planting trees.

                   WHOEVER CUTS TREES HAS NO RIGHT TO LIVE.

Explanation: