1.

In a certain season the Indian cricket team had a 40% success rate in the first 80 matches it played. What is the minimum number of additional matches it must play so that it has a 60% success rate for the season ?A. 30B. 40C. 45D. 35

Answer» Correct Answer - B
(i) Find the number of matches won out of 80 matches. Minimum number of additonal matches is equal to the number of matches to be won.
(ii) first find the number of matches won out of 80 matches played.
That is `(40)/(100)xx 80=32`
To get minimum number of matches to be played it has to win all the additional matches.
(iv) Let the requred win all the additional matches.
(iv) Let the required number of matches =x.
`rArr ((32 +x))/((8+x)) xx 100 =60`


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