The following table shows the relationship between students who enroll in advanced Algebra and Chemistry in a particular high school. From a sample of 40 students it is found that 17 are enrolled in Algebra, 12 are enrolled in Chemistry, and six are enrolled in both.

Algebra Not in Algebra Total

Chemistry 6 6 12

Not in Chemistry 11 17 28

Total 17 23 40

Complete the rest of the two-way frequency table above.

Part A: How many students are enrolled in either Algebra or Chemistry?

Part B: If there are 2,000 students in this school, how many (rounded to the nearest whole student) are expected to be enrolled in just Chemistry this year?

Guest Apr 19, 2016

#1**+5 **

Part A:

6 in chemistry

11 in algebra

6 in both

6+11+6 = 23

Part B:

2000/40 = 50

12 in chemistry of a sample of 40

12*50 = 600

600 in chemistry of a school of 2000

12/40 = 3/10

When 3 out of every 10 students are in chemistry simply multiply by 200 to find the total students of the school enrolled so that

600/2000 = 3/10

SpawnofAngel Apr 19, 2016