Please help really confused on all

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asked Jun 19, 2017 148k views

1 Answer

Anjisan · Answer 1 · 2017-06-25T06:21:34+0000

$\left \{ {{x - y = 1.50} \atop {40x + 40y = 940}} \right. \\ \\ *x - y = 1.50$

x = 1.50 + y

*40x + 40y = 940
40 (1.50 + y) + 40y = 940
60 + 40y +40y = 940
60 + 80y = 940
80y = 940 - 60
80y = 880
y = 880/80
y = 11

*x - y = 1.50
x - 11 = 1.50
x = 1.50 + 11
x = 12.5

x=DAVID
Y=PETER

Please help really confused on all

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