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Arthur is organising hig collection of DVDs. He has 36 altogether... The ratio of comedy films to action to horror is 4:7:1. How many of each type of DVD does he have?
 one year ago
 one year ago
Arthur is organising hig collection of DVDs. He has 36 altogether... The ratio of comedy films to action to horror is 4:7:1. How many of each type of DVD does he have?
 one year ago
 one year ago

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msayer3Best ResponseYou've already chosen the best response.0
so based on the ratio, for every 12 DVDs, he has 4 comedy, 7 actions and 1 horror
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
now, all you need is to figure out how that ratio would change for 36 DVDs instead of 12 DVDs
 one year ago

ShannonlaneBest ResponseYou've already chosen the best response.0
what?:L, sorry but i'm not the clever type so dont see how i'm going to work it out
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
alright, what do you get if you divide 36 by 12?
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
yes  so now, the ratio was orignally set for 12 DVDs (7+4+1)  now you just multiply each number in the ratio to get how many DVDs there are exactly  does that make sense?
 one year ago

ShannonlaneBest ResponseYou've already chosen the best response.0
erm so, you multiply 7 by 36?
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
no, not quite. the actual number of DVDs, compared to the total number in ratio is 3 times larger (36/12). So try multiplying each number in ratio by 3 then you get actual number
 one year ago

ShannonlaneBest ResponseYou've already chosen the best response.0
erm so your saying you multiply (which the "/"?) 4 by 3, 7 by 3 and 1 by 3?:LL
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
yeah, that should give you the number of DVDs in each categories 
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
do you understand the process?
 one year ago

msayer3Best ResponseYou've already chosen the best response.0
good to hear  so basically you have to figure out what the ratio is between given sample number and the actual number that you are working with. Then apply that ratio to sample number ratio
 one year ago
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