500
A pair of friends agree to embark on a trip together. They travel (x + 5) km on the first day. On Day 2, they travel 2 km more than half of the distance they traveled on the first day. On Day 3, they drove 3 times as far as they did on Day 2. If they drove 5000km total, find the value of x.
What is "x=1659"?