I have a banana with breakfast every weekday but would only get two (family) dinners out of one chicken. Bananas ripen quickly, so I keep at most a week’s worth around at any given time. I try to go to the grocery as seldom as possible.
Ergo, I’d probably trade five or six bananas, tops.
I don’t care for bananas and I love chicken, so…
I will give you all the bananas I have for that chicken.
However, I will not give you the chicken I have for any number of bananas.
Now, peaches are different. I love peaches as much as I love chicken.
I will trade a chicken for 6 peaches, or vice versa.