Answer:
The correct answer is A
i just took it on usatestprep
Explanation:
The score of Sachin in consecutive five innings at 80, 90 ,100, 100 and M respectively.
The average of the five innings is 100.
We need to find the value of M.
Average = sum of observations/total no of observations
Sum of observations = 80+90+100+100+M
= 370 + M
Total no. of observations = 5
Put all the values,

So, he scored 130 in his last innings.
He scored (130-80 = 50) more in his last innings as compared to the first inning scored.
Really confusing try summing it up in your own words for the answer!! Hope I helped!!
Answer:
Learn to listen
Pay attention to body language
Observe how others communicate in different contexts
Don't be afraid of a bit of silence
Use action verbs and confident language
Ask questions
Find common ground, even in an argument.