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.
Softwood lumber is timber obtained from coniferous evergreen trees. The timber may be processed or used as it is for various applications. Various types of softwood lumbers are available.Levels of resilience vary from one softwood species to the next.However, softwoods are generally not as hardy as hardwood.ore than 60 species of the tree exist. This much-loved softwood enjoys wide usage as a Christmas tree. Fir lumber is one of the weaker softwood types. Wood from the tree is not considered suitable for general timber use.