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Algebra 8 Online
OpenStudy (annie96):

Yves has bought 420 tropical fish for a museum display. He bought 6 times as many parrotfish as angelfish. How many of each type of fish did he buy? (Points : 1) 30 angelfish, 180 parrotfish 60 angelfish, 360 parrotfish 120 angelfish, 200 parrotfish 360 angelfish, 60 parrotfish

OpenStudy (mathstudent55):

You can look at each solution. First, choose the ones that have the number of parrotfish 6 times greater than the number of angelfish. Eliminate the other choices.

OpenStudy (annie96):

60 angelfish, 360 parrotfish

OpenStudy (mathstudent55):

30 angelfish, 180 parrotfish ---> here parrotfish is 6x angelfish 60 angelfish, 360 parrotfish ---> here parrotfish is 6x angelfish 120 angelfish, 200 parrotfish 360 angelfish, 60 parrotfish

OpenStudy (mathstudent55):

Eliminate the last two choices. Now add the two numbers. If you get 420, that's the answer.

OpenStudy (mathstudent55):

30 angelfish, 180 parrotfish ---> 30 + 180 = 210 not the answer 60 angelfish, 360 parrotfish ---> 60 + 360 = 421 this is the answer

OpenStudy (mathstudent55):

You are correct

OpenStudy (mathstudent55):

Did you need to do this with a system of equations?

OpenStudy (annie96):

thank you.

OpenStudy (mathstudent55):

You're welcome.

OpenStudy (annie96):

i have another problem if you don't mind helping me.

OpenStudy (mathstudent55):

No, not at all. start a new post, i'll be right there

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