An athlete must travel 30 km in his last 5 days of preparation for a competition. the first day runs \(\displaystyle{\frac{{{23}}}{{{2}}}}\) km, the second \(\displaystyle{\frac{{{15}}}{{{4}}}}\) km, the third day \(\displaystyle{\frac{{{16}}}{{{3}}}}\) km and the fourth day \(\displaystyle{\frac{{{35}}}{{{6}}}}\) km. How much km did the athlete travel in these four days?