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IceJOKER [234]
3 years ago
15

Roger bought two plots of land for $120000. He sold the first plot and profited 15%. He sold the second plot and lost 10%. His t

otal profit was $5500. How much did he pay for each plot?
Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0

Answer:

he paid $70000 and $ 50000

Oxana [17]3 years ago
6 0
X + y = 120000
0.15x - 0.10y = 5500

Multiply both sides of bottom by 100 to remove decimals

x + y = 120000
15x - 10y = 550000

Multiply both sides of top by 10

10x + 10y = 1200000
15x - 10y = 550000

Add the two

25x = 1750000
x = 70000
He paid $70,000 for the property that made a profit, and paid $50,000 for the property that lost value.
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