Derek reads at rate of 25 words per min. how long would it take him to read a 225 word article if he read at a constant rate without stoppi

attach the statements so i can answer : )

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.