Quote:
Originally Posted by Faisal86
But Brother, if his average prior to scoring 100 in the tenth match was 84, it meant that he would have scored 84*9=756 scores. And after scoring 100 in the tenth inning his total score would have become 756+100=856. And his new average out of 10 matches would be 856/10= 85.6. Which is not 8 more than the previous 84. So the calculations have led to the erroneous result.
According to me his average of the nine innings was 20. After scoring 100 in the 10th inning his average would become [(20*9)+100]/10 = 28.
What do you say sir?  |
Thanks for correction. My solution was outcome of hasty calculation.
You are right.
If the avg of
9 innings is x then their
sum will be
9X
Total sum of
10 innings will be =
9X+100
Average of 10 innings will be = X+8
As per formula:
Average = Total Sum / Number
X+8 = (9X+100)/10
Result comes:
X=20
New average will be 20+8=28.
Ans: 28