Question

marta ate a quarter of a whole pie. edwin ate 1/4 of what was left. christina then ate 1/3 of what was left.

Answer 1

16 percent of the pie is what is left.

Answer 2

One quarter would be 1/4th, So it Edwin ate another 4th, it would be 1/8th, and if Christina ate 1/3rd of the 1/8th it would be 1/24th of the pie left.