Here we are:

One set meal: Little Colonel (that is, four packs)+mashed potatoes+Xiaomi Linda (exchangeable)+toys =20.50.

B Package: original chicken (one piece)+small potatoes+small cups of mirinda (exchangeable)+toys =24.00.

Package C: Pastoral crispy chicken burger+small potatoes+small cups of Melinda (exchangeable)+toys =23.50.

Package D: Deep-sea cod fillets+corn salad+small cup of Jiuzhen juice (this cannot be exchanged)+toys =24.00.

As far as our price is concerned, in fact, the children's set meal is more expensive than a single one, because toys are not given away for free, but the price is increased, which is equivalent to paying for toys by yourself. . . . . . It's just that buying toys in a set meal is cheaper than buying toys alone. Single toy purchase 10 yuan. . . . . .