Posted by **Brandon** on Friday, November 30, 2007 at 3:22pm.

Please review.

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 -
**Michael**, Friday, November 30, 2007 at 5:04pm
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.

## Answer this Question

## Related Questions

- math - During rush hour, Fernando can drive 20 miles using the side roads in the...
- algebra - During rush hour, Bill can drive 60 miles using the side roads in the ...
- math,algebra - can someone just set up the equations for me for this problem. ...
- help,math - can some set the equation up for me. Science and medicine. A plane ...
- Spanish - Please see if this is written correctly. Let me know if I can say ...
- Spanish-7thgrade - I had to write a paragraph about what my mom did yesterday ...
- spanish - Please see if this is written correctly. Let me know what to fix. ...
- Math - Boston is 200 mi away from NY. It takes me 1 hour less to drive to Boston...
- Math - Boston is 200 mi away from NY. It takes me 1 hour less to drive to Boston...
- Algebra 1--Please, help me! (Steve) - Mulitiply. Simplify your answer. 1. 3r^2t...