# Math

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Ella can drive 65 mi on side roads in the same time that it takes to drive 30 mi on the interstate. Ella's rate on the side roads is 7 mi faster than her rate on the interstate, what is her rate on the side roads?

65/x+7=30/x
35x=210
x=6

6+7=13

• Math -

Use the equation distance = rate multiplied by time (d = r*t).

Let s be her rate on the side roads.

d = r*t
65 = s*t

Now, form a similar equation (using the numbers 30 & 7).

After you come up with your two equations, use either substitution or elimination to solve it.

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