Solve Ratio Question: (3a + 3b)/(a - b) with a/b = 2/5 | Get Homework Help

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Homework Help Overview

The problem involves calculating the expression (3a + 3b)/(a - b) given the ratio a/b = 2/5. The original poster expresses uncertainty about how to approach the problem.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Some participants suggest expressing 'a' in terms of 'b' based on the given ratio, while the original poster seeks clarification on how to proceed with the calculation.

Discussion Status

Participants are engaging with the original poster's question, providing hints and encouragement. There is an ongoing exploration of the relationship between 'a' and 'b', but no consensus or resolution has been reached yet.

Contextual Notes

The original poster has not made any attempts to solve the problem and is looking for guidance on how to start. The discussion includes a hint that relates to the ratio provided.

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Homework Statement



Calculate: (3 a + 3 b)/(a - b) If a/b = 2/5

No attempts, I don't know how to solve this.

Help?
 
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welcome to pf!

hi blunted! welcome to pf! :smile:
blunted said:
a/b = 2/5

hint: so a = … ? :wink:
 
Oh my god :D

Thanks for the hint and the welcome :)
 
K + l + m = 34.
K/l = 1/4
l/m = 1/3

l = ?

Is it 8 ?
 
Last edited:
maybe it is and maybe it isn't :wink:

show your calculations! :smile:

(same hint as before, btw)
 

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