Solve for x
x=250
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1.2x\times 0.9-x=20
Add 1 and 0.2 to get 1.2.
1.08x-x=20
Multiply 1.2 and 0.9 to get 1.08.
0.08x=20
Combine 1.08x and -x to get 0.08x.
x=\frac{20}{0.08}
Divide both sides by 0.08.
x=\frac{2000}{8}
Expand \frac{20}{0.08} by multiplying both numerator and the denominator by 100.
x=250
Divide 2000 by 8 to get 250.
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