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March 29, 2024, 05:18:02 am

Author Topic: Ratios help!  (Read 999 times)  Share 

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Droolv

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Ratios help!
« on: February 12, 2017, 12:40:17 pm »
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Hey guys, just needed some help with this question, I can't wrap my head around it  :-\ Thanks in advance

In a candy shop, the ratio of Red jellybeans to Blue jellybeans is 3:7, whilst the ratio of Blue jellybeans to Green jellybeans is 8:11. Find the ratio of Green jellybeans to Red jellybeans.


natdogg

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Re: Ratios help!
« Reply #1 on: February 12, 2017, 01:15:46 pm »
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It'll help to find a common ratio, by that I mean:

The lowest common multiple of 7 and 8 (the blue jellybean ratios) is 56, and you know that 3:7 is the same as 24:56, and 8:11 is the same as 56:77.
So now you have the ratio of red to blue to green of 24:56:77

Therefore ratio of Green to red jellybeans is 77:24
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Droolv

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Re: Ratios help!
« Reply #2 on: February 12, 2017, 02:12:11 pm »
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Thanks so much!