The answer is 7 cars. Let a be the number of Alice's cars, and s the number of Sylvester's cars. Alice has 1/5 as many miniature cars as Sylvester has: a = 1/5 * s. Sylvester has 35 miniature cars: s = 35. We know that a = 1/5 * s and s = 35. Thus, a = 1/5 * 35. a = 35/5. a = 7 cars. Alice has 7 cars.
