Asked by rfvv
1. Some items were sold at a 50%
discount.
2. Some items were sold at a 50%
off.
3. Some items were 50% discount.
4. Some items were 50% off.
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Are they all grammatical?
Answers
                    Answered by
            Writeacher
            
    #s 1 and 4 are correct. The others are not. 
    
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