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There are two cups that equal one pound of uncooked rice. There are six cups that equal to one pound of cooked rice.
4.? cups
40 cups
1 cup of rice is about 0.48 of a pound
3 cups
2 cups per pound of uncooked rice. [1 cup=8oz. ~ 2cup=16oz.~ 16oz=1 lb] 50lbs X 2 Cups= 100 cups of uncooked rice 1 Cup Uncooked Rice will feed Four adults and then some 50lb Bag equals 400 (Adult) servings of rice minimum.
About 11 cups of rice equal a 5 lb bag of rice.
About two and a half
One cup of dry rice weighs 6.9 oz. so 1 pound of dry rice is about 2 1/3 cup. From: http://pages.prodigy.net/jmiller.cb/s810.html
About 2.24 cups
40 cups
250 cups.