Question 1178767
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(a)    To find total expenses,  add the partial expences.



(b)    To find the income,  subtract total expenses from the earned amount.



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It is strange to me to see that the person who studies Finance, 


comes to the forum with such elementary questions . . . 




This matter should be clear to him  (or to her)  from the very first days of studying,

otherwise this person spends his  (or her,  or their parents)  money for nothing . . .