SUBEX Company Numerical Ability Averages

The no. of element of group when decrease by 20% of 24 ,and the average of this reduced group is 21.15 , If the above average is
25% more then the average of the initial group by what % does the aggregate change from its inital value.

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SUBEX Other Question

in the first 10 overs of the cricket the run rate was only 3.2.what should be the run rate in the remaining 40 overs of the cricket to reach target of 280? To manufactur a particular type of toy , the man has to in avg a fixed cost of 200 for any no. of of toy.In addition for every toy that he produce ,
he has to incur a variable cost of 3 .If the selling price is 5 what volume the man have no proof and no loss .