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Chapter 3: Q. 84 (page 333)
What percent of 215 is 86?
The percentage is 40%.
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What percent of 260 is 78?
Sergio needs to attach a wire to hold the antenna to the roof of his house, as shown in the figure. The antenna is feet tall and Sergio has feet of wire. How far from the base of the antenna can he attach the wire?
Julio has $ in his pocket in nickels and dimes. The number of dimes is 10 less than twice the number of nickels. Find the number of each type of coin.
A sidewalk in front of Kathy鈥檚 house is in the shape of a rectangle four feet wide by feet long. Find the 鈸� perimeter 鈸� area.
Ethan and Leo start riding their bikes at the opposite ends of a mile bike path. After Ethan has ridden hours and Leo has ridden hours, they meet on the path. Ethan鈥檚 speed is six miles per hour faster than Leo鈥檚 speed. Find the speed of the two bikers.
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