SOLUTION: an office used stamps. Some were $7 stamps and the rest were $8 stamps. If the total cost was 1447, how many stamps of each kind di the office use?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: an office used stamps. Some were $7 stamps and the rest were $8 stamps. If the total cost was 1447, how many stamps of each kind di the office use?       Log On


   

Question 529477: an office used stamps. Some were $7 stamps and the rest were $8 stamps. If the total cost was 1447, how many stamps of each kind di the office use?
Answer by boilpoil(127) About Me  (Show Source):
You can put this solution on YOUR website!
Well there are some $7 stamps and $8 stamps, and their worth is $1447
So if there are x $7 stamps, there would be (1447-7x/8) $8 stamps.
Explaining: 1447 is their worth, -7x means move the value of $7 stamps out and finally dividing by 8 is because it's only the value of $8 stamps but not the number.
According to this you should be able to calculate the numbers.