用绳子测量一口井的深度,把绳子三折来量,井外每折余16分米;把绳子四折来量,井外每折余4分米。求井深和绳长多少分米?(f2p,p*_.I;M5\+r4}7E'C)r
算式:提示:};S9N5{0q2b9R:{0\(f2p,p*_.I;M5\+r4}7E'C)r
答:求井深和绳长'G2S5S分米。(f2p,p*_.I;M5\+r4}7E'C)r