Concept explainers
To find gallons of gas used
Answer to Problem 7.10STP
1000miles 24.096 gallons is used.
Explanation of Solution
Given information:
Miles travelled by 1 gallon gas=32
Mileage increased=6%
Calculation:
According to question,
6% of 32=
Solving,
=
So,
=1.9 miles
In 2011,
Miles increased=32+1.9
Hence, miles in 2011 is 33.9.
In 2015,
Total miles=
Solving,
=
Hence, miles in 2015=9.5
Miles increased in 2015=32+9.5= 41.5
Now,
For 1 gallon is used in 41.5 miles.
Therefore for 1000 miles,
On solving,
For 1000miles 24.096 gallons is used.
Chapter ISG Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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