Question

Max has 5 red model cars one third as model cars are red how many model cars does max have

Answer 1

So  one third means you mutilply by 3  so 3x5 is 15 model cars

Answer 2

Ask yourself "1/3 of what number is 5?" Then write your algebraic equation from the question...

1/3 × x = 5

Now solve

1/3x = 5

x = 5 ÷ 1/3
x = 5 × 3/1
x = 15

1/3 of 15 is 5. He has 15 cars.