1) To find the unit rate of plants per yard, divide the number of plants by the distance in yards. For the first pair, 18 plants / 6 yards = 3 plants per yard. This rate is constant, so the unit rate is 3 plants per yard.
2) To find the unit rate of bricks per minute, divide the number of bricks by the time in minutes. For the first pair, 18 bricks / 4 minutes = 4.5 bricks per minute. This rate is constant, so the unit rate is 4.5 bricks per minute.
3) To find the unit rate of miles per hour, divide the distance in miles by the time in hours. For the first pair, 38 miles / 4 hours = 9.5 miles per hour. This rate is constant, so the unit rate is 9.5 miles per hour.
4) To find the unit rate of washes per box of detergent, divide the number of washes by the number of boxes. For the first pair, 275 washes / 5 boxes = 55 washes per box. This rate is constant, so the unit rate is 55 washes per box.
5) To find the unit rate of square feet per pot of paint, divide the coverage in square feet by the number of pots. For the first pair, 3000 sq ft / 5 pots = 600 sq ft per pot. This rate is constant, so the unit rate is 600 sq ft per pot.
6) To find the unit rate of pages per hour, divide the number of pages read by the time in hours. For the first pair, 114 pages / 3 hours = 38 pages per hour. This rate is constant, so the unit rate is 38 pages per hour.
7) To find the unit rate of miles per gallon, divide the number of miles by the gallons of fuel. For the first pair, 168 miles / 4 gallons = 42 miles per gallon. This rate is constant, so the unit rate is 42 miles per gallon.
8) To find the unit rate of dollars per pizza, divide the cost by the number of pizzas. For the first pair, $54 / 8 pizzas = $6.75 per pizza. This rate is constant, so the unit rate is $6.75 per pizza.
9) To find the unit rate of feet per bar, divide the depth in feet by the pressure in bars. For the first pair, 136 feet / 4 bars = 34 feet per bar. This rate is constant, so the unit rate is 34 feet per bar.
Parent Tip: Review the logic above to help your child master the concept of ratios and unit rates worksheet 2.
