solve the number sentence

label Algebra
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schedule 1 Day
account_balance_wallet $5

solve the number sentence 

Nelson family per hour 35L, and the foster family 15 L. They had a combined total of 55 hours of output for the sprinkler that resulted into 1425L .

how much for the nelson

how much for the Foster

Jun 7th, 2015

35x+15y =1425

x+y =55

35x+15(55-x) =1425

20x =1425 -15*55= 1425 -825= 600

x=30

y =25

nelson 30 hours

foster 25 hours



Jun 7th, 2015

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Jun 7th, 2015
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