问题
填空题
某发电厂有10200吨煤,前十天每天烧煤300吨,后来改进炉灶,每天烧煤240吨,这堆煤还能烧______天.
答案
(10200-300×10)÷240,
=(10200-3000)÷240,
=7200÷240,
=30(天).
答:这堆煤还能烧30天.
故答案为:30.
某发电厂有10200吨煤,前十天每天烧煤300吨,后来改进炉灶,每天烧煤240吨,这堆煤还能烧______天.
(10200-300×10)÷240,
=(10200-3000)÷240,
=7200÷240,
=30(天).
答:这堆煤还能烧30天.
故答案为:30.