SOLUTION: Please help me with this problem: Only tenth-, eleventh-, and twelfth-grade students attend Washington High School. The ratio of tenth graders to the school�s total student popu

Question 1009543: Please help me with this problem:
Only tenth-, eleventh-, and twelfth-grade students attend Washington High School. The ratio of tenth graders to the school�s total student population is 86:255, and the ratio of eleventh graders to the school�s total student population is 18:51. If 1 student is chosen at random from the entire school, which grade is that student most likely to be in?
A. Tenth
B. Eleventh
C. Twelfth
D. All grades are equally likely.
E. Cannot be determined from the given information

Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
tenth grade=(86/255)(100%)=33.7%
eleventh grade=(18/51)(100%)=35.3%
twelfth grade=100%-(33.7%+35.3%)=100%-69%=31%
ANSWER: One student chosen at random is most
likely in the eleventh grade, because eleventh
grade is the highest percent of the student body.

RELATED QUESTIONS
I need help with a word problem please. There are 980 students who attend high school. (answered by Earlsdon)

_____A regression analysis of students' college grade point averages (GPAs) and their... (answered by stanbon)

_____A regression analysis of students' college grade point averages (GPAs) and their... (answered by rothauserc)

Can you please help me solve this problem using a proportion? Student-teacher ratio.... (answered by mbarugel)

Kindly help me with this question. The student-teacher ratio for Washington high was... (answered by stanbon)

pLEASE HELP WITH THE FOLLOWING THE STUDENT TEACHER RATIO FOR WASHINGTON HIGH WAS... (answered by stanbon)

There are 1680 students who attend Central High School. At a recent football game at the (answered by ptaylor)

There are 330 students at Valley Central High School enrolled in Chemistry. On the April... (answered by VFBundy)

Please help me create and linear system and solve for this word problem. 45 high... (answered by josmiceli)