How long does a 50 pound bag of horse feed last if you feed 3qts twice daily?

First let me say that you should feed a horse by weight not volume as feeding by volume is in no way accurate.
Now how long a 50 pound bag of feed will last based on a 3 qt scoop depends on how much that 3 qt scoop actually weighs.
For example 1 qt of oats weighs 1 pound( 3 lbs for 3 qts), while 1 qt of wheat bran weighs 0.5 pounds (1.5 lbs for 3 qts.), it's a big difference really.
You can measure out 3 qts of your feed and put it in a plastic bag and take it to a grocery store and weigh it in their scale to get an accurate reading or buy a small hanging scale and measure it at home.
If you can't or won't do either of those things then you can contact the manufacturer of the feed and they would be able to tell you.
Remember no two feeds will weigh exactly the same and without the brand and type of feed you are giving nobody can help you.
First let me say that you should feed a horse by weight not volume as feeding by volume is in no way accurate.
Now how long a 50 pound bag of feed will last based on a 3 qt scoop depends on how much that 3 qt scoop actually weighs.
For example 1 qt of oats weighs 1 pound( 3 lbs for 3 qts), while 1 qt of wheat bran weighs 0.5 pounds (1.5 lbs for 3 qts.), it's a big difference really.
You can measure out 3 qts of your feed and put it in a plastic bag and take it to a grocery store and weigh it in their scale to get an accurate reading or buy a small hanging scale and measure it at home.
If you can't or won't do either of those things then you can contact the manufacturer of the feed and they would be able to tell you.
Remember no two feeds will weigh exactly the same and without the brand and type of feed you are giving nobody can help you.