Answer:
Will be reveled in part B.
Step-by-step Part A
Using O P N Chart for the profits of $500
O P N represent Original, Part Percent and New original.
O $500 ║100%
P $410║-18%
N $90 ║82%
I got $410 which is my part percent by subtracting the original by the New original. (500 - 90 = 410)
Now to solve for the part percent and New original which we will know how much money would be given to charity?
Solving for part percent
Part percent x org = Part
(X) x 500 = 90
500x = 90
500 500
x = 0.18 = 18%.
If they sell $500 worth of calculators and donates $90 to charity they are left with $410 and they gave the charity 82%
Part B:
O: $90 ║ 100%
P: $110 ║-18%
N: $200 ║82%
So this tells me that the charity recived $110.
