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Mathematics 9 Online
OpenStudy (123ab456c):

Rod brought 40 juice bottles to the picnic. He brought 28 apple juice bottles and the rest were orange juice bottles. What was the ratio of apple juice bottles to orange juice bottles? A. 7 to 3 B. 3 to 10 C. 7 to 10 D. 2 to 1

OpenStudy (123ab456c):

@wcrmelissa2001

OpenStudy (mathstudent55):

Since you need the ratio of apple juice bottles to orange juice bottles, you must first know how many bottles of each type there are. You are told directly there are 28 apple juice bottles. Can you figure out from the given information how many orange juice bottles there are?

OpenStudy (wcrmelissa2001):

Same as the other question :D Find the common factor and keep dividing till there is no more common factors. This concept essentially applies to all ratio questions. E.g. 16:10 Both can be divided by 2 so it will become 8:5 There are no more common factors so 8:5 is the answer

OpenStudy (123ab456c):

none of the answer choices say 8:5

OpenStudy (mathstudent55):

@wcrmelissa2001 I agree that once you have the numbers whose ratio you need, you just write the ratio and reduce. However, in this problem, there is an extra step. You first need to find one of the numbers you will use in the ratio.

OpenStudy (mathstudent55):

@123AB456C "e.g." means "for example" The ratio 16:10 is just an example showing how it reduces to 8:5 It is not meant to be the answer to the problem.

OpenStudy (mathstudent55):

@123AB456C Please go back to my first response. Can you answer my question above?

OpenStudy (wcrmelissa2001):

Yeah. Once you have and understand the concept, you should be able to solve all of these types of questions. You also already asked another similar question just now and you could do that one so you should be able to do this one :D

OpenStudy (123ab456c):

is the answer C

OpenStudy (mathstudent55):

\(\sf \color{red}{number ~of~apple ~juice~bottles}~to~\color{blue}{number~of~orange~juice ~bottles} \) \(\sf \color{red}{~~~~~~~~~~~~~~~~~~28~~~~~~~~~~~~~~~~~~~~~~~~~}~to~\color{blue}{number~of~orange~juice ~bottles} \)

OpenStudy (mathstudent55):

@123AB456C Guessing is a bad way of answering problems because you have a low chance of getting the correct answer. Answering my question above would be much more productive.

OpenStudy (mathmale):

1. Find the number of orange juice bottles from the info given. 2. Write the ratio of the number of apple bottles to the number of orange bottles. 3. Reduce this fraction. @123AB456C: Please show your work.

OpenStudy (123ab456c):

is it A

OpenStudy (mathstudent55):

In addition, what if the question were not multiple choice? Then you'd have no choices to pick from. Learn how to solve the problem, then compare your answer to the choices, and pick the correct choice.

OpenStudy (mathmale):

@123AB456C: would you kindly show your own work? Otherwise you appear to be guessing (which won't take you very far).

OpenStudy (mathstudent55):

Total juice bottles = 40 = apple juice bottles + orange juice bottles Apple juice bottles = 28 Orange juice bottles = ?

OpenStudy (123ab456c):

is it B

OpenStudy (mathstudent55):

The time you've wasted trying to guess would have been much better spent answering the question: How many orange juice bottles are there?

OpenStudy (mathmale):

Kindly follow Mathstudent55's suggestion (from above): Total juice bottles = 40 = apple juice bottles + orange juice bottles Apple juice bottles = 28 Orange juice bottles = ? Should you add? subtract? multiply? divide? Why?

OpenStudy (mathstudent55):

|dw:1452867985276:dw|

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