There us 120 students in the 5th grade 50% of them have a dog, how many 5th grader have a dog?

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03-05-2018
Mathematics

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There us 120 students in the 5th grade 50% of them have a dog, how many 5th grader have a dog?

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Someone help me please.

prestonshelton prestonshelton · Answer 1 · 2018-05-03T21:09:35+02:00

prestonshelton prestonshelton

03-05-2018

Hello!

First you have to convert the decimal into a percent

50% = 0.50

Multiply this by the amount of students.

120 * 0.50 = 60

The answer is 60

Hope this helps!

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upandover upandover · Answer 2 · 2018-05-03T21:10:49+02:00

upandover upandover

03-05-2018

Hi there!

In order to solve this problem, we'll need to set up a proportion. The proportion we are going to use is x/120 = 50/100. Next, we'll cross-multiply, giving us 100x = 6000. Lastly, we'll divide each side by 100, giving us 60 5th graders that have a dog.

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!

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