Answer:
The cost price was increased by 33.33 % to provide this profit
Explanation:
Given:
Cost price = Â $3
Selling price  = $4
Gross profit  = $1
To Find:
Profit percentage =?
Solution:
Profit Formula calculates the net gains or losses incurred by subtracting total expenses from total sales.
Now profit  = 4 - 3 = 1
Now the profit percentage can be found by
=[tex]\frac{ profit \times 100}{costprice}[/tex]
=[tex]\frac{ 1 \times 100}{3}[/tex]
=[tex]\frac{100}{3}[/tex]
= Â 33.33%