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Action movies make up 85% of Devon's movie collection. If he has 20 movies,how many action movies are in Devon's collection?

Sagot :

The answer is 17, because you know it’s going to be most of it, so you do 20 times .85 on your calculator, and you have your answer! :) 

Method 1

We can find the number of Devon's movie collection by multiplying its percentage by the number of Action movies. That is;

Number of Devon's movie collection [tex]= \frac{85}{100} \times 20=\frac{85}{5} =17[/tex]

Method 2

We can also use ratio and proportion. According to the question, out of every 100 Action movies 85 are Devon's Movie collection. This means,


Action movies                                        Devon's collection                  

100                                                                         85

20                                                                             [tex]x[/tex]

If 100 corresponds to 85, then 20 will correspond to a less value than 85. If less more divides,Hence,

[tex]x=\frac{85 \times 20}{100}=17[/tex].

Therefore he has 17 movies that are in Devon's collection.