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The rest of the students had an? 19.) On a given history test, 10 students had an average (arithmetic mean) of 80. The rest of the students had an average of 92. If the average for the whole class was 88, how many students were in the class? a.) 15 b.) 20 c.) 25 d.) 30 e.) 35

316 people own cars and 280? In a business with 416 employees, each person owns a car or cell phone or both. If 316 people own cars and 280 own cell phones, how many people own a car but not a cell phone? A.) 36 B.) 100 C.) 136 D.) 180 E.) 316

car trveling 10 km/hr faster than? At 9:00 am, a car leaves a certain tollbooth heading north, At 9:15 am, a car trveling 10 km/hr faster than the first car leaves the same tollbooth heading north. If the second car overtaes the first car at 11:15 m, find the speed of the slower car