Kyra is putting up streamers for a party. she uses 75 feet of streamers to decorate one wall. two more walls also each use 75 feet of streamers. kyra cuts 75 feet of streamers for the last wall, but this wall has a large poster on it, and she only needs to use 68 feet of streamers. how many feet of streamers did kyra in all?

218 ft of streamers in all

Step-by-step explanation:

75 + 75 + 68 = 218

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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