Question: A long rectangular sheet of metal 30 inches wide is to be made into a gutter by turning up strips vertically along the two sides

A long rectangular sheet of metal 30 inches wide is to be made into a gutter by turning up strips vertically along the two sides (Fig. 6). How many inches should be turned up on each side to maximize the amount of water that the gutter can carry? Fold along this line 30 in Fold along this line x 30

Fold along this line 30 in Fold along this line x 30 - 2x Figure 6 X l

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