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.
All Heart Redwood Lumber is milled from the center of the tree and is often specified for its natural resistance to moisture and insects and reduced maintenance.The primary grades of All heart Redwood are Construction Heart, Select Knotty Heart, Heart B and Clear All Heart.edwood Lumber is a durable softwood-lighter and easy to work with compared to exotic Hardwoods-resistant to cupping and warping. Redwood lumber, siding and decking are often specified by architects due to a reputation earned when they were milling 2000 year old trees.