3 * 8 (1/2) + 4 * ( 8 (1/2) + 2 (2/5) ) = 51/2 + 218/5 = 255/10 + 436/10 = 691/10 = 69 (1/10)
Ответ. 69 (1/10) км преодолел турист
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3 * 8 (1/2) + 4 * ( 8 (1/2) + 2 (2/5) ) = 51/2 + 218/5 = 255/10 + 436/10 = 691/10 = 69 (1/10)
Ответ. 69 (1/10) км преодолел турист