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hemant balde Grade:
        

Avg age of X number of adults in a class is 30yrs. If 12 new adults with avg age of 32 joined with them then the avg age increases by one. Find X?

6 years ago

Answers : (1)

AKASH GOYAL AskiitiansExpert-IITD
419 Points
										

Dear Hemant


Sum of age of X adults=30X


sum of age of 12 new adults=12x32=384


new avg=384+30X/X+12 = 31


solve for X


X=12


 


 All the best.                                                          


AKASH GOYAL


AskiitiansExpert-IIT Delhi


 


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6 years ago
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