Store A:6Pound Box For $4.95
Store B:10Pound Box For $8.50
Which is the unit price if the detergent at store A?
You don't need the data on store B to answer that question.
Just divide $4.95 by 6 to get the unit price (price per pound) for store A. It happens to be less than the unit price for Store B.
Well I Got 0.82 Is I'm Right
Actually, the correct answer for Store B is 82 1/2 cents (or 0.825 dollars) per lb, not 82 cents.
The correct question to ask would be
"Am I right?", not "Is I'm Right". Your use of English grammar needs improvement.