Hello there! We have the following equation: c + p = 15 (c = carrots, p = potatoes) Previously, we had this equation: 2 + 4 = 6. 2 is 1/3 of 6, and 4 is 2/3 of 6. The sum of these two fractions make a whole.
Let's apply this rule to 15 servings. Since we are looking for thirds, divide 15 by 3 to solve for 1/3, or "p". 15 / 3 = 5 We have 5 potatoes.
Now, we must remember that the amount of carrots is twice the amount of potatoes. Divide 15 by 3, then multiply that quotient by 2. 15 / 3 = 5 5 * 2 = 10
We have 10 carrots.
Your final answer is: Winston will need 5 potatoes and 10 carrots.
