SOLUTION: The average (arithmetic mean) age of a group consisting of teachers and engineers
is 40. If the teachers average 35 and the engineers 50 years old, then the ratio of the number of
Algebra.Com
Question 283079: The average (arithmetic mean) age of a group consisting of teachers and engineers
is 40. If the teachers average 35 and the engineers 50 years old, then the ratio of the number of teachers to the number of engineers is:
(A) 3 : 2 (B) 3 : 1 (C) 2 : 3 (D) 2 : 1 (E) 1 : 2
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
35t+50e/(t+e)=40
35t+50e=40*(t+e)
35t+50e=40t+40e
10e=5t
10/5=t/e
2/1=t/e
(D) 2:1
RELATED QUESTIONS
The average age of a group of teachers and students is 20. The average age of the... (answered by scott8148)
The average age of a group of teachers and students is 20. The average age of the... (answered by ewatrrr)
The arithmetic mean or average of the age of a group of doctors and lawyers is 40. If the (answered by Theo,stanbon)
In north high school the ratio of the number of women teachers to men teachers is 11 to... (answered by stanbon)
The average salary for American teachers is approximately normally distributed with mean... (answered by Fombitz)
The average age of consisting doctors and lawyers is 40 . If the doctors average age is... (answered by josmiceli,greenestamps)
The average age of 5 teachers of a school was 48.From them a teacher of age 56 was... (answered by KMST)
A committee consisting of 6 people is to be selected from eight parents and four... (answered by stanbon)
A new elementary school is to have 50 faculty members. Some will be teachers and the rest (answered by jorel1380)