A batsman a score of 98 runs in the 19th inning and thus increase his average by 4. What is his average after 19th inning?
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Average score be x till 18th inning and total score be y
A. To. Q
y/18=x
18x-y=0---------------(1)
Average score after 19th inning =x+4
Total score after 19th inning =y+98
Again
(y+98)/19=x+4
19x+76=y+98
19x-y=22------------(2)
Eq(1)-eq(2)
-x=-22
x=22 reqd ans
So average after 19th inning =26
A. To. Q
y/18=x
18x-y=0---------------(1)
Average score after 19th inning =x+4
Total score after 19th inning =y+98
Again
(y+98)/19=x+4
19x+76=y+98
19x-y=22------------(2)
Eq(1)-eq(2)
-x=-22
x=22 reqd ans
So average after 19th inning =26
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