3000c - 900 = 3750
3000c = 4650
c = 4650/3000
or, more directly
c = (p+e)/n
The formula p = nc - e gives the profit p when a number of items n are each sold at a cost c and expenses e are subtracted.
If p = 3750, n = 3000 and e = 900, what is the value of c?
1 answer