To answer this we will DIVIDE the amount of baskets by 4 (since it is 1/4) to see how many she has ALREADY packed, and ho many she has left. Lets do it:-
128 ÷ 4 = 32
CHECK OUR WORK:-
32 × 4 = 128.
So, she has done 32 baskets. lets see how many more she needs to pack:-
128 - 32 = 96.
So, Shelia has 96 baskets LEFT to pack,
Hope I helped ya!!