Solve
-Doreen and Irena Plan to Leave Their Houses at the Same

Multiple Choice

Solve.
-Doreen and Irena plan to leave their houses at the same time, roller blade towards each other, and meet for lunch after 2 hours on the road. Doreen can maintain a speed of $3.5$ miles per hour, which is $70 \%$ of Irena's speed. If they meet exactly as planned, what is the distance between their houses?

A) 7 miles
B) $11.9$ miles
C) 10 miles
D) 17 miles