Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [ratio]

For questions concerning the ratio of a certain quantity to another.

In mathematics, a ratio is a relationship between two quantities indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the ratio of oranges to lemons is eight to six (that is, $8:6$, which is equivalent to the ratio $4:3$). The numbers compared in a ratio can be any quantities of a comparable kind, such as objects, persons, lengths, or spoonfuls. A ratio is written "$a$ to $b$" or $a:b$, or sometimes expressed arithmetically as a quotient of the two.

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how many biscuits can be made?

These are the following to make 20 biscuits: Flour:450g Egg:350g essence: 300g milk:500g. Question. There are now 2kg of each components. What is the highest possible number of biscuits which can be made? I have tried it like this: If 1600g (by…
Faaz Usman
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Given two numbers A and B, make them in ration of 3:4 by only adding integer(s) to A or B or to both A and B

I have a set of 2 numbers say 365 and 550, I want to make them in ratio say 3:4 I have the option of adding x and y to 365 and 550, with limitation of x and y should always be integer, both or one can be 0 if required. How can I find the minimum…
Ratna
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Given a ration x:y, make it to ratio of 1:1 or 3:4 or 4:3 by only adding some values to x or y or both.

This problem is related to programing, for which I am searching an optimal solution. Problem: I have some images in different height to width ratios. I want to make them in ratios of 1:1 or 3:4 or 4:3, by adding white space. I want to add as little…
Ratna
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Ratio/scaling (High school)

Have a question from my textbook which is causing some confusion. Q. A map has scale $1:7500$. A town has an area of $37.5~\text{cm}^2$ on the map. What is the real area of the town in $\text{km}^2$? Can I please request as much info as possible…
K.Doe
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If $ab=ba$, $\frac bx = \frac cz$ and $\frac ax = \frac dz$, does that mean that $ac=bd$?

If $$ab=ba, \ \frac bx = \frac cz \quad\text{ and }\quad\frac ax = \frac dz$$ does that mean that $ac=bd $? I tried to prove this but couldn't.
ashen one
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How to apply odds ratio to calculate change?

I did a control/treatment experiment and found an of odds ratio $= 2.6 (1.03-6.58)$ mortality in treatment. Thus, for every one death in control there are $2.6$ deaths in treatment. I believe the beta associated with mortality in treatment is…
Emily
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How to simplify the equations below trying to find for ratio test

a) $\frac{ \sin(n) + e^n}{\cos(n) + \pi^n}$ I expanded and got $\sin (n) + e^n/(cos(n) + \pi^n) x \cos (n+1) + \pi^{n+1}/\sin(n+1) + e^{n+1}$? and also how to simplify $(n+1)^e/(n^e)e$ Edit: I totally got confused with the ratio test formula.Sorry…
user9535888
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Ratio and Proportions Question

Can someone please answer this with proper explanation. At sahara shopping centre, a person can purchase as much articles at a time as his or her age that is a person of a years age can purchase only n similar articles at a time .Amisha is younger…
Faisal Umair
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Ratios and Proportions in Fish Tanks

I was recently studying for a test and got this problem correct. However, I don't think I would be able to answer a similar type of question correct again. The question is the following: A marine aquarium has a small tank and a large tank, each…
Pablo Salamanca
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Classify math problem

Hoping someone can help with following 2 points on question detailed below: 1) Help to clarify what kind of question this is (e.g. ratio problem) so I could plug into google and get meaningful insight. Had to supply a 'tag' to post this question so…
JD1
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Isn't this a ratio variable?

Question: State whether the following variable is an interval or ratio variable? i) Number of car sales per year The solution states that it's an interval variable. But that's wrong. For the variable number of car sales per year a meaningful…
Pansen1515
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Finding out two numbers(ratio and proportion)

There is a question in our book whose answer i am not being able to find out.: Find two numbers such that the mean proportional between them is 28 and the third proportional to them is 224. This is what I have done so far: Let the two numbers be…
Souradeep Das
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Is there a problem with canonical forms for ratios?

High school maths and ratios at KA show how to solve ratio problems, and when ratios are equivalent - but don't say what the ratio is. I've worked out some canonical forms, and I wondered why something like this isn't used, when they seem to…
hyperpallium
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Scaling an object up and down

I have a drawing that is $7.2$ cm tall. The original drawing used a scale of $1$ cm: $13$ inches. According to that scale the object would be $7$ ft. $8$ in. tall in real life. How do I figure out what scale to use to make it $5$ feet tall?
April Weaver
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Ratio Percentage Dilemma

I was given a scenario at work in which I was to set a boolean flag if two weights of items were a certain percentage of each other. So for example, I have a box a customer has dropped off for shipping. The customer stated the box weighed, 5 lbs,…
DevelopingDeveloper
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