A person walks along a mountain road from the bottom of the mountain to the top of the mountain for 1 hour, and the distance to the top of the mountain is still 1 kilometer away; and it takes 50 minutes to walk from the top of the mountain to the bottom of the mountain. It is known that the speed of going down the mountain is 1.5 times the speed of going up the mountain. How many kilometers is this mountain road? ．
某人沿一条山路从山下到山顶走了1小时，距山顶还差1千米；而从山顶到山下50分钟可以走完，已知下山速度是上山速度的1.5倍，这条山路多少千米．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1.5 * (5/6)</gadget>
<output>1.25</output>

<gadget id="calculator">1.25 - 1</gadget>
<output>0.25</output>

<gadget id="calculator">1 / 0.25</gadget>
<output>4</output>

<gadget id="calculator">4 * 1</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<result>5</result>