Answer:Answer: Tim had 600 grams of flour in the end.Step-by-step explanation:Here's how to solve this problem step-by-step: 1. Find Tim's initial amount of flour Tim had 100 grams less than Nico, who had 450 grams.Tim's initial amount: 450 grams - 100 grams = 350 grams 2. Set up an equation Let's say Nico gave 'x' grams of flour to Tim. Nico's flour in the end: 450 grams - x grams Tim's flour in the end: 350 grams + x grams The problem states that Tim had three times as much flour as Nico in the end 350 + x = 3(450 - x) 3. Solve the equation: 350 + x = 1350 - 3x4x = 1000x = 250 4. Find Tim's final amount of flour Tim's flour in the end: 350 grams + 250 grams = 600 grams Answer: Tim had 600 grams of flour in the end.