Express 15 students for 3 teachers as a simplified rate, 15/3, 5 students/teacher, 3 students/teacher, 5, 3 teachers/student, 5 teacher/student, Express $40 for 10kg as a simplified rate, 4kg/$, 4, $40/10, $4/kg, 10kg, $40, Express 12 days in 4 years as a simplified rate, 12 days/year, 3 days/year, 3 years/day, 12 years/day, 1/3 years/day, 1/3 days/year, Express $180 in 6 hours as a simplified rate, 30 hours/cent, $30, 30 hours, 30 cents/hour, 30 hours/$, $30/hour, Express $126000 to purchase 9 acres as a simplified rate, 14 000 acres/$, $14 000/acre, 14 000, $14 000, 14 000 acres, $9 per acre, Express $17.50 for 5 kilograms as a simplified rate, $3.50/kg, 3.50, $3.50, 3.50 kg, 3.50 kg/$, $5/kg, Express 15 kilometres run in 60 minutes as a simplified rate, 250 m/minute, 15 m, 60minutes, 15, 0.25, 0.25 minutes, Express 60 minutes to run 15 kilometres as a simplified rate, 4 km/minute, 15 minutes, 15 km, 4 minutes/km, 4, 1/4, Express Find the average rate of change for: Relma drove 6000 kilometres in 20 days., 300 days/km, 300 km/day, 20 days, 6000 km, 300, 200, Express Find the average rate of change for: Holly saved $420 over three years., 1/140, $1/140 years, 1 year/$140, 140, 140 years/$, $140/year

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