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8. Becca is twice as old as Susan and Greg is 9 years older than Susan. 3 years ago, Becca was 9 less than 3 times Susan's age. How old is Greg now?

8. Becca is twice as old as Susan and Greg is 9 years older than Susan. 3 years ago, Becca was 9 less than 3 times Susan's age. How old is Greg now?

College Algebra
College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 40SE: A family consisting of 2 parents and 3 children is to pose for a picture with 2 family members in...
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8. Becca is twice as old as Susan and Greg is 9 years older than Susan. 3 years ago, Becca was 9 less than 3 times Susan's age. How old is Greg now? 9. Lauren is 3 less than twice Andrew's age. 4 years from now, Sam will be 2 more than twice Andrew's age. 5 years ago, Sam was three times Andrew's age. How old was Lauren 5 years ago? 10. Gabby is 1 year more than twice Larry's age. 3 years from now, Megan will be 27 less than twice Gabby's age. 4 years ago, Megan was 1 year less than 3 times Larry's age. How old will Megan be 3 years from now? 11. Two cars travel in opposite directions. One car drives at an average of 55 kph, while the other at 45 kph. After 4 hours, how far apart are the two cars? 12. A bus travels for 2 hrs at 60 kph and another 3 hrs at 70 kph. What is its average speed? 13. Nelia takes % hour to dress and get ready for school. It takes 4/5 hour to reach the school. If her class starts promptly at 8:00 am; what is the latest time she can jump out of bed in order not to be late for school? 14. Ivana is meeting her friends at 9:30 am. The average speed of the bus is 30 km/h, and she needs to travel 25 km. When is the latest time she should catch the bus? 15. Two planes fly each other. They are 420 kilometers apart. They pass each other after 3 hours. If their speeds differ by 40 kilometers per hour, what are their speeds?
Transcribed Image Text:8. Becca is twice as old as Susan and Greg is 9 years older than Susan. 3 years ago, Becca was 9 less than 3 times Susan's age. How old is Greg now? 9. Lauren is 3 less than twice Andrew's age. 4 years from now, Sam will be 2 more than twice Andrew's age. 5 years ago, Sam was three times Andrew's age. How old was Lauren 5 years ago? 10. Gabby is 1 year more than twice Larry's age. 3 years from now, Megan will be 27 less than twice Gabby's age. 4 years ago, Megan was 1 year less than 3 times Larry's age. How old will Megan be 3 years from now? 11. Two cars travel in opposite directions. One car drives at an average of 55 kph, while the other at 45 kph. After 4 hours, how far apart are the two cars? 12. A bus travels for 2 hrs at 60 kph and another 3 hrs at 70 kph. What is its average speed? 13. Nelia takes % hour to dress and get ready for school. It takes 4/5 hour to reach the school. If her class starts promptly at 8:00 am; what is the latest time she can jump out of bed in order not to be late for school? 14. Ivana is meeting her friends at 9:30 am. The average speed of the bus is 30 km/h, and she needs to travel 25 km. When is the latest time she should catch the bus? 15. Two planes fly each other. They are 420 kilometers apart. They pass each other after 3 hours. If their speeds differ by 40 kilometers per hour, what are their speeds?
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