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Question:

The winery sold 81 cases of wine this week. If twice as many red cases were sold than white, how many white cases were sold this week?

A 27 cases
Explaination

Let's represent the number of cases of white wine as w. There are twice as many cases of red wine than white, so red wine = 2w. The total number of cases is 81, so w + 2w = 81. Solve for w: w + 2w = 81 3w = 81 w = 27 cases