4.MD.2 Measurement and Data Lesson 10

Mathematics
Tutor: None Selected Time limit: 1 Day

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?

May 18th, 2015

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. 

May 18th, 2015

There are 4 semi-trailer trucks parked in a line at the rest stop.  After the first truck, each truck in the line weighs 2 tons more than the truck before it.  The trucks weigh a total of 32 tons.  how many pounds does each truck weigh?

May 18th, 2015

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