Edward can run 1/2 mile in 300 seconds. What is Edward’s unit rate?

A certain laundry detergent recommends 1/4 cup of detergent for a 1/2 load of clothes. How much detergent is recommended for 4 loads of clothes?

Erin made cookies in the shape of lions and giraffes. She made 24 lion cookies and 16 giraffe cookies. What percent of the cookies were shaped like a lion?

A typical hour-long television program runs for 42 minutes, excluding commercials. What percent of this type of program is set aside for commercials?

Horace takes a taxi uptown, and the fare is $12.78. He wants to give the driver a 10% tip. If Horace gives the driver a $20 bill, how much change should he ask for?

The Hudson family went out to dinner. The meal cost $49.50. If they also left a 15% tip, approximately how much did the entire dinner cost?