The average age of 30 boys in a class is 16 years The average of the ages of the boys and the teacher is 17 years The age of teacher is? avg of 30 is 16=30*16=480 avg of 30 and 1 teacher is 17=31*17=527 Save then age of teacher is 527-480=47... 2012mm is the average rainfall of mumbai for last 13 years.
Types of Lumber: Softwood and Hardwood. There are two types of lumber: softwoods and hardwoods. Softwood lumber comes from conifer trees like pine, fir, spruce, and cedar. These woods get their classification for a reason; they can be easily dented with just your fingernail.
The ingredients are combined according to the unique recipe for each particular paper, and the grades are then produced in a way that ensures they have the desired properties. According to this source, pulp consists of cellulose fibers that usually come from pulp wood - which in turn comes from trees. The most common wood types used for pulp are aspen, eucalyptus, birch, pine and spruce. Different types of wood are used because the properties of the fibers vary.