Amar Baked a Cake. John ate 1/6. Susan ate 1/5. Chan ate 1/4. Cindy ate 1/3. Luigi ate 1/2. How much of the original cake is left?

Question

the next person eats whats left after the person before them eat their fraction

Answer 1

10/60 + 12/60+15/60+20/60=57/60 eaten

That leaves 3/60 left = 1/20 = 5% left.