An operation has a 20 percent scrap rate. as a result, 80 pieces per hour are produced. what is the potential labor productivity that could be achieved by eliminating the scrap?

25%

Explanation:

If there is 20% scrap, then

80% of (production + scrap) = 72 pcs/hr

Now,

The percent increase in labor productivity is, .

Or it can be written as  25% of  which would give 80 pieces per hour.                                            

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.