Today, my mother and I decided to make a delicious fruit salad.

We went to the supermarket and bought an apple from 2 yuan, three bananas from 2 yuan and a small watermelon from 7 yuan, and a lettuce from 2 yuan, 2+2+7+2- 13 yuan. We made a delicious fruit salad with 3 13 yuan. I remember the last time my mother took me to a restaurant and ordered a plate of fruit salad, 29 yuan, but when we cooked it at home, we only spent 13 yuan, 29- 13 = 16 yuan, and when we cooked it at home, we saved 16 yuan.

I said to my mother, "Next time, we all cook at home, which is economical and hygienic." . My mother praised me for being sensible and an expert in financial management. Learning math well and applying what you have learned is very interesting!