Question 233461
x+y=38, x=38-y
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175000x+200000y=7200000
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175000(38-y)+200000y=7200000
6650000-175000y+200000y=7200000
25000y=550000
y=22 more expensive
x=16 cheaper house
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22*200000=4400000
16*175000=2800000