White chocolate present = 75% that is 0.75.
The Peppermint sticks present = 25% that is 0.25x.
Therefore,
Part A: Equation to find the number of pounds of white chocolate is
c = 0.75 x ----------(1)
Where x is the total number of pounds of a candy and c is the number of pounds of white chocolate
And equation to find the number of pounds Peppermint sticks is
p = 0.25 x ----------(2)
Where x is the total number of pounds of a candy and p is the number of pounds Peppermint sticks.
We are given 3 pounds of peppermint sticks.
Plugging p=3 in second equation, we get
3 = 0.25 x
Dividing both sides by 0.25, we get
x= 3/0.25 = 12.
Therefore, total number of pounds of a candy = 12 pounds.
Part B: Plugging x = 12 in first equation c = 0.75 x to find the number of pounds of white chocolate are present in the candy.
c = 0.75 × 12 = 9 pounds.