Question

help in algebra 2

Answer 1

North Westeros School graduated 150 students. Approx 15% of the senior class did not graduate. How many seniors were there total?

Answer 2

15% did not, so 85% did.
150 is 85% of what?

Answer 3

I get 127.5 @tkhunny

Answer 4

No, you don't. You may have answered "What is 85% of 150?" That was not the question.

150 is 85% of what? <== Answer this one.

Answer 5

I'm sorry but i don't understand the question you're asking

Answer 6

Yes you do. There is a number. 85% of that number is 150. What is that number?

How did you find 127.5? Didn't you do this? 150 * 0.85 = 127.5?

You need to solve this... (Some Number)* 0.85 = 150

Answer 7

Okay so how do I figure out that number without guessing?

Answer 8

The question is incomplete.

Answer 9

What do you mean ? ^ @quietus

Answer 10

Okay, so in the answer choices 176 is one of the answer choices and I multiply 176*0.85 and I get 149.6, which I;m guessing that might be the answer

Answer 11

The question is not incomplete.

You SOLVE FOR the number. Usually, in a case like this, it is accomplished by division.

Faced with: (Some Number)* 0.85 = 150
Division by 0.85 produces: (Some Number) = 150 / 0.85 = 176.47

Then we think a little. Obviously, we can't have 0.47 students in the Senior class. This is why the word "Approx" was in the problem statement - making the problem statement complete.

Answer 12

150 is 85%
'cause 15% of people didn't graduate

Answer 13

ignore what i just said i feel retarded

Answer 14

You are right, though. There are ambiguities. Sometimes, juniors graduate. There is room for some interpretation. :-)

Answer 15

it's okay :D

Answer 16

that moment when i realised juniors cant graduate

Answer 17

So then what will the steps be to solve?

Answer 18

150-85
x-15
150:x=85:15 then find x

Answer 19

150 students = 85%. therefore (150/85)x100

Answer 20

then sum x and 150 and there you go

Answer 21

The following situation is not the same as that being discussed here, but doing this problem might prove to be illuminating:

Suppose that your senior class has 200 students, but for various reasons, only 89% of them graduate. (That implies that a certain number did not graduate.) How many graduate and how many do not?

It may help to represent the number of seniors (total) algebraically; DawnR is the only one of us who has done that so far.

Let x be the total number of students in the senior class. Approximately 15% of these do not graduate. This means that (100%-15%=) 85% do graduate. How many graduate? 150.

How would you find x?

Strong hint: when we write, "15% did not graduate," that doesn't mean that it's correct to write just 15% or 0.15. "15% did not graduate" actually implies 0.15 times some count, which in this case is x; thus, 0.15x do not graduate.

1) Write the expression that states how many students DO graduate. Hint: your expression MUST include 'x', and must include the quantity 150 (which means 150 students).

2) Solve this expression for x.

3) Write: "The total number of seniors was ." (Fill in the blank, please.)