挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
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挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
60÷(1-40%)=100米
挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
挖一条水渠,第一天挖了全长的40%,第二天挖了60m,正好挖完.这条水渠长多少米?
60÷(1-40%)=100米