Answer:Chef Boy needs 1,250 grams of flour to serve 10 people.Step-by-step explanation:To solve this, we use proportion.Chef Boy uses 500 grams of flour for 4 people.We want to find how much flour is needed for 10 people.Step 1: Set up the proportion500 grams/4 people = x grams/10 peopleStep 2: Solve for x Cross multiply: 500 × 10 = 4 × x ⇒ 5000 = 4x ⇒ x = 5000/4= 1250