A bat man has a certian average of runs for 12 innings in the 13th inning he scors 96 runs thereby increasing his average by 5 runs . what is the average after the 13th inning?
2006-09-22 22:18:42 · 10 answers · asked by Sharik 2 in Science & Mathematics ➔ Mathematics
Tota limprove his average by 5 runs per inning he has to contribute 12 X 5 = 60 runs for the previious 12 innings . Thus the average 13 th inning
=96 -60 = 36
36 Answer
2006-09-23 00:04:04 · answer #1 · answered by Faisal 2 · 0⤊ 0⤋
x=total no. of runs for the 12 innings
x/12= average of the 12 innings
(x+96)/13= average of the 13 innings
x/12+5=(x+96)/13
(x+60)/12=(x+96)/13
13x+780=12x+1152
x=372
(x+96)/13=(372+96)/13
(x+96)/13=468/13
(x+96)/13=36
Answer: average of runs after 13 innings=36
2006-09-23 06:38:55 · answer #2 · answered by Lin 2 · 0⤊ 0⤋
Let his initial avrage (before the 13th) be x
Hence, (12x +96)/13 = x + 5
or, 12x + 96 = (x+5)13 = 13x + 65
or 13x-12x = 96-65
or x = 31
Hence, the average after the 13th inning,
= x + 5
= 31 + 5
= 36
Ans - 36
2006-09-23 06:21:53 · answer #3 · answered by vishal_willpower 2 · 0⤊ 0⤋
Call the total runs in the first 12 innings x.
The average of the first twelve innings is x/12
The average of the first thriteen innings is (x+96)/13
You have x/12+5 = (x+96)/13
Now you solve this equation!
2006-09-23 05:37:28 · answer #4 · answered by helene_thygesen 4 · 0⤊ 0⤋
i am a damn idiot when it comes to mathematics. But still i tried. i think its 36.
Assume his total score after 12 innings is "x".
x+96/13=x/12+5
x+96/13=x+60/12
12x+1152=13x+780
x=372
So his total score after 12 innings is 372. So after 13 innings
372+96=468
So after 13 innings his average
468/13=36
Hope its right.
2006-09-23 06:12:28 · answer #5 · answered by smilingface 3 · 0⤊ 0⤋
Not possible
Use algebra
Let average for 12 innings be a
12a + 13(5) = 12a + 96
65 = 96
but 65 does not equal to 96
Therefore no answer
2006-09-23 05:47:42 · answer #6 · answered by Ashley 2 · 0⤊ 0⤋
what country did he play for.
2006-09-23 05:27:31 · answer #7 · answered by lefang 5 · 0⤊ 0⤋
brain overload...
2006-09-23 05:27:26 · answer #8 · answered by Toshiba S 2 · 0⤊ 0⤋
what sport?
2006-09-23 05:43:11 · answer #9 · answered by sup 5 · 0⤊ 0⤋
dunno
2006-09-23 05:26:20 · answer #10 · answered by sourajit n 2 · 0⤊ 0⤋