4.MD.2 Measurement and Data Lesson 10

User Generated

Wubara

Mathematics

Description

Max was on vacation twice as long as Jared and Half as long as Wesley.  The boys were on vacation a total of 3 weeks.  How many days was each boy on vacation?

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Explanation & Answer

Lets say W=Wesley, M=Max, and J=Jared.
So your equations are M=2J, 2M=W, and M+J+W=21days(3 weeks)
So substituting M and W into M+J+W=21 gives you 2J+J+2M=21, substitute M again, to get 2J+J+4J=21 so you get 7J=21 so J= 3 days. 
Using J=3, substitute in to find M, 
using M=2J, so M=2(3) so M=6 and using that, substitute into 
2M=W, so 2(6)=W so W=12. 


Anonymous
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