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Out of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spentRs. 20 more than the average expenditure of all the nine. The total money spent byall of them was :

Out of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spentRs. 20 more than the average expenditure of all the nine. The total money spent byall of them was : Correct Answer Rs. 292.50

Let the average expenditure be Rs. x Then,

 

9x=[(8*30)+(x+20)]<=>9x =x+260 <=> x =32.50

 

Total money spent = 9x =  Rs. (9 x 32.5O) = Rs 292. 50

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