SOLUTION: of the 23 students in grade 9 math class, 15 are taking science this semester. if there are 420 grade 9 students in the school, using this ratio, how many would you expect to be ta

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: of the 23 students in grade 9 math class, 15 are taking science this semester. if there are 420 grade 9 students in the school, using this ratio, how many would you expect to be ta      Log On


   

Question 1106463: of the 23 students in grade 9 math class, 15 are taking science this semester. if there are 420 grade 9 students in the school, using this ratio, how many would you expect to be taking science
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
.
15%2F23 = x%2F420.


Solve this proportion for x.

---------------
There is a bunch of lessons on  proportions  in this site:
    - Proportions
    - Using proportions to solve word problems
    - Using proportions to solve word problems in Physics
    - Using proportions to solve Chemistry problems
    - Using proportions to estimate the number of fish in a lake (*)
    - HOW TO algebreze and solve this problem using proportions
    - OVERVIEW of lessons on proportions

Read them and become an expert in this area.


Your problem is similar to the one from the lesson marked (*) in the list.