Race track

Cycling races had 4 stages. The length of the first was 1/3 of the length of the entire track. The length of the second stage was 2/9 of the length of the entire track, and the length of the third stage was 1/4 of the track. The fourth stage was 15 km shorter than the second stage. How long was the entire race track?

Final Answer:

x =  540 km

Step-by-step explanation:

x=a+b+c+d a = x/3 b = 2/9 x c = 1/4x d = b15 = 2/9x  15  3x+92x+41x+(92x15)=x  x/3+2/9 x+1/4 x+(2/9 x15)=x  x=540=540 km



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