A: 40
B: 50
C: 60
D: 70
E: 80
举一反三
- Two cars left the same town traveling in the same direction. Car A traveled 40 miles per hour and left at 3:20. Car B traveled 50 miles per hour and left at 4:40. At what time will car B catch up with car A A: 10:00 B: 9:00 C: 8:40 D: 7:20 E: (E) 6:10
- This kind of car can run _____ the speed of 80 miles per hour. A: at B: by C: to D: on
- A car travels at a rate of 50 miles per hour.How long will it take to travel 300 miles（） A: 250hours B: 6hours C: 1/6hours D: 15000hours
- The maximum speed of this car is 150 miles per hour. A: highest B: lowest C: minimum D: supreme
- 在校园里，车速被限制在每小时10英里。( be limited to) On campus, the car speed 10 miles per hour.
内容
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A car travels 20 miles at 30 mph, then 10 miles at 60 mph. What is the mean speed for the whole journey of 30 miles A: 36 B: 40 C: 42 D: 45
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11. The speed of this car was 160 miles ____ hour.
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This kind of car can run the speed of 80 miles an hour. A: by B: to C: on D: at
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Accelerating to about 70 miles an hour, a cheetah can run as fast as a car on the open highway.
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A hiker walked for 3 days. She walked 18 miles on the first day, walking 3 miles per hour. On the second day she walked for one less hour, but she walked one mile per hour faster than on the first day. On the third day she walked the same number of hours as on the first day but at the same speed as on the second day. How many miles in total did she walk ？（） A: 24 B: 44 C: 58 D: 60 E: 62