A batsman has scores 100runs in his 11th innings.His average run per innings thus increased by5. What will be his average run per innings if he scores 62runs in the 12th innings?
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let the average run per innings in first 10 innings be x.
then total runs in 10 innings =10x
A.T.Q.
(10x+100)÷11=x+5
> 10x+ 100= 11x+55
> 11x-10x=100-55
> x=45
it implies that
average of 10 innings is45
and,
àverage of 11 innings is 50
=runs scored in 11 innings =11×50=550
now,
after 12 innings total runs scored by batsman is 550+62=612runs
thus required average =612÷12
=51 answer
then total runs in 10 innings =10x
A.T.Q.
(10x+100)÷11=x+5
> 10x+ 100= 11x+55
> 11x-10x=100-55
> x=45
it implies that
average of 10 innings is45
and,
àverage of 11 innings is 50
=runs scored in 11 innings =11×50=550
now,
after 12 innings total runs scored by batsman is 550+62=612runs
thus required average =612÷12
=51 answer
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0
Sorry it is very hard i dont know
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