Show an equation and a solution for the problem. At the coal mine, it takes the older conveyor belt 20 hours to move one day's coal output. The new belt can do it in 15 hours. If the old belt began to move the day's output and the new belt started as well an hour later, how long would it take to move it? Round to the nearest tenth.

Question

Show an equation and a solution for the problem.  At the coal mine, it takes the older conveyor belt 20 hours to move one day's coal output.  The new belt can do it in 15 hours.  If the old belt began to move the day's output and the new belt started as well an hour later, how long would it take to move it?  Round to the nearest tenth.

anonymous · Answer

looks like you got a lot of word problems today right?