SOLUTION: 0.05x + 0.25y=66 0.15x + 0.05y=72 Solving by elimination.

Question 140902This question is from textbook
: 0.05x + 0.25y=66
0.15x + 0.05y=72
Solving by elimination. This question is from textbook

Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
0.05x + 0.25y=66 multiply this equation by -3 & add.
0.15x + 0.05y=72
-.15x-.75y=-198
--------------------------
-.7y=-126
y=-126/-.7
y=180 answer.
.05x+.25*180=66
.05x+45=66
.05x=66-45
.05x=21
x=21/.05
x=420 answer.
proof:
.15*420+.05*180=72
63+9=72
72=72

RELATED QUESTIONS
Solve by the elimination method. .05x+.25y=44... (answered by checkley77)

.05x+.25y=11 and .15x+.05y=-12 (answered by stanbon)

15x=0 (answered by tommyt3rd)

15x + 19x-10=... (answered by Alwayscheerful)

4x^-15x+14=0 (answered by robertb)

Solve system of 3 equations: 15x-25y+z+10=0 30x-50y+2z+20=0 90x-150y+6z+60=0 Can... (answered by Alan3354)

25y^2 + 16 =... (answered by Fombitz)

-15x^2+2+7x=0 (answered by checkley77)

4x^2-15x+9=0 (answered by jim_thompson5910)

15x^2+26x+8=0 (answered by jim_thompson5910)