On a rainy day, every kid at margo's school brings a raincoat, an umbrella, or both. $8\%$ of the kids bring both. the total number of kids with umbrellas is twice the total number of kids with raincoats. what percent of the kids bring only an umbrella? explain your solution in complete sentences.

64% of the kids only bring an umbrella. Set up a system of equations: suppose x% of kids only bring raincoats, and y% only bring umbrellas. Since 8% of kids bring both, 1-8%=92% bring only one of the two, so x+y=92. Percent of kids who bring raincoats is x+8, and percent of kids bringing umbrellas is y+8. y+8=2(x+8). Solve the two equations, we get x=28, y=64. 64% kids only bring umbrellas.

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