曾洪根
【例1】甲、乙、丙、丁四個(gè)工程隊(duì)共同投標(biāo)修一條高速公路。甲隊(duì)的長(zhǎng)度占其他三個(gè)隊(duì)總長(zhǎng)度的2/13 ,乙隊(duì)的長(zhǎng)度占其他三個(gè)隊(duì)總長(zhǎng)度的1/4 ,丙隊(duì)的長(zhǎng)度占其他三個(gè)隊(duì)總長(zhǎng)度的4/11 ,丁隊(duì)的長(zhǎng)度是80千米。甲、乙、丙三個(gè)隊(duì)的總長(zhǎng)度是多少千米?