After John worked at a job for 10 years, his salary doubled. If he started at $x, his salary after 10 years is _____
2 answers:
John’s salary after doubling in 10 years is $ 2x
<u>Solution:</u>
It is given to us that John worked at a job for 10 years.
He started working at the job with a salary of $x.
After 10 years the salary has been doubled.
We have been asked to find John’s salary now after doubling.
To find John’s salary after 10 years we need to do the following.
Salary after 10 years = Salary before 10 years 2
Therefore, John’s salary after doubling in 10 years is $2x
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Let us say distance between Eugenia's home and school is x miles.
Speed of Eugenia when she walked from home to school = 3 mph
Speed of Eugenia when she walked from school to home = 7 mph
Total time taken = 45 minutes or 0.75 hours
We know that the speed distance formula is given by:
Time taken by Eugenia when she walked from home to school = x/3 hours
Time taken by Eugenia when she walked from school to home = x/7 hours
Total time taken = x/3+x/7
So forming an equation we have,
Taking lcd of 7 and 3 as 21,
10x=15.75
Dividing both sides by 10 , we have
x= 1.575
Answer: So we can say that the distance between Eugenia's house and school is 1.575 miles.
Answer and Step-by-step explanation:
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