SOLUTION: Grace;s average driving speed is 3 mph faster than Thelma's. In the same length of time it takes Grace to drive 156 miles, Thelma only drives 147 miles. What is Grace's average spe
Algebra.Com
Question 56838: Grace;s average driving speed is 3 mph faster than Thelma's. In the same length of time it takes Grace to drive 156 miles, Thelma only drives 147 miles. What is Grace's average speed?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
156/(X+3)=147/X
156X=147X+441
156X-147X=441
9X=441
X=441/9
X=45 MPH
X+3=45+3=48 MPH FOR GRACE
RELATED QUESTIONS
Grace's average driving speed is 10 mph faster than Tom's. In the same length of time, it (answered by JulietG)
Thelma's average driving speed is 3 miles per hour faster than Doug's. In the same... (answered by josmiceli)
Thelma's average driving speed is 15 miles per hour faster than Kirk's. in the same... (answered by stanbon)
Please show me how to solve this problem
Richard's average driving speed is 3 miles... (answered by ankor@dixie-net.com)
Richard’s average driving speed is 6 kilometers per hour faster than Thor’s. In the same... (answered by lwsshak3)
Richard's average driving speed is 4 miles per hour faster than Kirk's. In the same... (answered by Paul)
I'd greatly appreciate it if some one could help me. Thanks!! Richard's average driving... (answered by edjones)
Richard's average driving speed is 23 km per hour faster than Kirk's. In the same length (answered by checkley77)
Thor's average driving speed is 25 km/hr faster than Kirk's. In the same length of time... (answered by josmiceli)