If the average monthly spending by 21 housewives in a locality was Rs 240, what is the new average spending if another housewife is added whose average monthly spending is 290?
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The average of marks obtained by 120 candidates in a certain examination is 35. ... If the number of students increases by 7, the expenses of the mess increase by Rs. ... Thus the original expenditure of the mess=35×12= Rs. 420 ... The population of a town increased by 20% during the first year, by 25% during the next year ...
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