Respuesta :
Answer: 11/20
Step-by-step explanation: you take the original 60 cookies and take away the 12 and the 15 to get 33. The original whole number was 60/60. Now it would be 33/60, but in simplest form it is 11/20.
There are 3 she’s in your question. Assuming you are taking about Sandra.
Sandra has 9/20 of the original cookies left.
Sandra has 9/20 of the original cookies left.