To find his time, divide his distance by his rate, which means that he runs for 1 hours (or
1.5 if you’re using your calculator). Adam runs the same 12 miles at 6 miles per hour, so
this is his Rate Pie:
This means that Adam runs for 2 hours. Adam takes half an hour longer to complete the
race, and half an hour is 30 minutes: (D).
- A The top graph is of the countries’ populations, and the bottom graph is of the countries’ areas.
Find the population density, , for each country by taking its number from the top graph
and dividing that by its number from the bottom graph:
Ecuador = , which equals 33.33
Uruguay = , which equals 12.5
Venezuela = , which equals 20
Chile = , which equals 18.75
The highest value among the countries is that of Ecuador, which is (A).
- C Since we know the time that Amy walked and the distance she walked are directly proportional,
we can set up a proportion to show her distance ÷ time. We want to know how many miles
