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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Question based on receiving share of profits by different persons

$A$ and $B$ started a business together and the respective ratio between the investments of $A$ and $B$ was $5:9$. After $4$ months from the start of business, $C$ joined the business and the respective ratio between investments of $B$ and $C$ was…
Soumee
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What is the ratio of mixing two liquids

Here is my attempted solution $T1/4$ and there is 3 cups of which would equal $3/4$. So since there is 3 times more than the ratio would be 3:1. Iis this correct?
Darrick
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Allegation concept clarity regarding total mixture?

"In a jar there is mixture of milk and water in the ratio of 7:5. 9 liters of mixture was taken out and replaced by same quantity of water and after that the ratio becomes 7:9 in the jar. find out original quantity of mixture or find out quantity of…
Neeraj Sharma
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A bag contains one dollar, 50 cents and 25 cents coins in the ratio 5:6:8. If the total amount is 420 dollars, find the total number of coins.

I came across this problem and can't seem to figure out the solution. The options are 789 879 978 798
ibuprofen
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What is concept behind alligation?

i am doing allegation topic but i am still confused about regarding actual concept behind allegation. my question is how we get ratio (original concept behind getting ratio) when we put mixing contents in formula of allegation. is it somewhere…
Neeraj Sharma
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How to find similarity ratio?

Helllo, I am not very good in math and I have simple question My question is: say I have 2 groups (A and B), where A has 17 pens (for example) and B has 13 pens. If 12 pens were the same from A and B, How can I present this in ratio? Thank you
SHAD
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What did Aristotle mean by $(A+C):C::(B+D):D$ and $(A+C):(B+D)::C:D$ ?

Source first encountered: p 482-484, Introducing Philosophy for Canadians: A Text with Integrated Readings (2011 1 ed). Primary Source: Bekker Number 1131 B, around Lines 11-13, Nicomachean Ethics by Aristotle. Translation 1: (2012) by Joe Sachs.…
user53259
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Differentiating milk from water

A milk seller has a milk of Rs.100/- per litre. In what ratio should water be mixed in that milk, so that after selling the mixture at Rs.80/- per litre, he may get a profit of 50%? 7:8/7:9/9:7/7:5 My attempt: To get 50% profit, selling price…
aarbee
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How to adjust a data set so that the differences are smaller?

I have data that is 100 values long. Each value is between 0.8 and 1. I want to adjust the values so that the maximum value in the data is 1 and minimum is 0.9 instead. How do i do this? Thanks Bobby
Bobby
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Calculate distance from golf ball to cup in image based upon size

This should be simple, but I'm not getting it. Given that a golf ball is 1.68" and a cup is 4.25" (diameter), if I have a photo showing both the ball and the cup, and know the distance from the camera to the ball, then based upon the size of the…
Tanoshimi
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what is the constant of proportionality?

I have been learning ratio and proportion lately and my teacher gave me this sum. If 7 oranges cost 700$, then how much will 60 oranges cost. She made a table which had 2 headings : Number of oranges and cost. Then she told me let the number of…
user271938
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Radius as a function of distance (ratios)

Seems like this is a simple question, but my own created equations don't seem to replicate results for other combinations of circles. Circle A at (0,0) has a radius of 6. Circle B at (15,0) has a radius of 2. Continuing this trend, what is the…
user3023925
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Mixtures and Replacement

How to approach this question? Let's say we have 40 l of water. Operation 1) 4 l water take out and 4 l juice replaced Operation-2)5 l water taken out and 5 l juice replaced and so on what would be the water's concentration at the end of nth…
Gaurav
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what percent of $.72$ quintal is $2.5 kg$?

what percent of $0.72$ quintal is $2.5 kg$? I am a 8 years old boy from INDIA. Please help me. how do I start have no idea. Tomorrow is my exam please help me.
Nil Dutta
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How to calculate mixing of two ratios to get desired ratio?

For the purpose of this example lets say I have two ingredients: water ($100\%$) a chocolate mix ($80\%$ chocolate, $20\%$ water) The goal is to mix them together to create a mix that is exactly $50\%$ water and $50\%$ chocolate. How can I…
pmatts
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