Total = 20/8 cups of dishwashing detergent.
he has 20/8 = 5/2 = 2 1/2 cups of dishwashing detergent, per load he uses 1/4
per load
2 1/2 - 1/4
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The general formula
x= number of loads
20/8 - x* 1/4= 0
20/ 8 = x 1/4
x 1/4 = 20/ 8
x= 4* (20/8 )
x= 10
The greatest number of loads of dishes Arthur was with this amount of detergent is 10
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