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$40x+25y=1000$

Substitute$x=0$

$40⋅0+25y=1000$

Solve for $y$

ZeroPropMultZero Property of Multiplication

$0+25y=1000$

AddTermsAdd terms

$25y=1000$

DivEqn$LHS/25=RHS/25$

$y=40$

b