Computing Unit Rates Key

Computing Unit Rates Homework 1) Lynnette can wash 95 cars in 5 days. How many cars can Lynnette wash in 11 days? 95 cars in 5 days 19 cars in 1 day +÷5 +x11 19 cars in 1 day 209 cars in 11 days 2) At the market, 8 batteries cost $10. How much do 6 batteries cost? 8 batteries cost $10 1 battery cost $1.25 +÷8 +x6 1 battery cost $1.25 6 batteries cost $7.50 Part 2: Independently answer the remaining questions on the worksheet. Circle your final answer! Make sure you have units! 1) At Harbor Freight, five light bulbs cost $9.85. How much would 7 light bulbs cost? 5 lightbulbs cost $9.85 +÷5 +x7 1 lightbulb cost $1.97 +x7 +x7 7 lightbulbs cost $13.79 2) Thor climbed 16 mountains in 7 months. How many mountains could Thor climb in 13 months? 2.3 mountains in 1 month x 13 29.9 mountains in 13 months 3) Arnold Palmer was able to hit 84 golf balls in 12 minutes. How many golf balls was he able to hit in 19 minutes? 84 golf balls in 12 minutes ÷12 7 golf balls in 1 minute x19 133 golf balls in 19 minutes 4) Erin goes to Bi-Lo to buy chocolate chip cookies. She can't decide if she wants Chips Ahoy or Chips Deluxe, so she decided to use the technique she learned in Miss Meholic's class to see which brand would be a better value. In a box of Chips Ahoy, Erin can get 24 cookies for $4.75. In a box of Chips Deluxe, Erin can get 32 cookies for $5.99. Which brand should Erin buy? Chips Ahoy - 24 cookies for $4.75 $4.75 ÷ 24 cookies = 0.20 = 20¢ Chips Deluxe