Answer:
50 miles
Explanation:
90% completed (in percentage)
45 mi completed (in miles)
Thus, we can say:
45 is 90% of what number??
This "what number" is the total (what we are trying to find). Now, we let this "what number" part be equal to "x". Also, we know "IS" means "=" and "OF" means "*". Thus we can write:
45 is 90% of what number??
45 = 90% * x
90% converted to decimal is:
90/100 = 0.9
Thus, the equation becomes:
![45=0.9x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bdk540lk4gs0j382jf82qtpkp4ao7ik4f1.png)
Solving for x:
![45=0.9x\\x=(45)/(0.9)\\x=50](https://img.qammunity.org/2020/formulas/mathematics/middle-school/fjuo02eel7jphqli8dy26se81scbn07x7s.png)
The trip is 50 miles