The equation can be used to find the number of times Maria hiked each trail is 90-10y=5x
What is the total miles covered by Maria on the two trails?
The total number of miles covered by Maria on the two trails is 90 miles, which means that the miles covered hiking the mountain plus the number of miles covered hiking the canal trail should be 90 in total
Since 5 miles are required to hiking the mountain, the total of miles covered hiking the mountain is 5 miles multiplied by the number of times of x ,whereas that of canal trail is 10 mile times y
5x+10y=90
At first, none of the options looks like the above equation, but by rearrangement we have the below:
5x=90-10y
90-10y=5x
The third equation is correct
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