Solve for a
a=2000
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1.12a=2240
Multiply 1.4 and 0.8 to get 1.12.
a=\frac{2240}{1.12}
Divide both sides by 1.12.
a=\frac{224000}{112}
Expand \frac{2240}{1.12} by multiplying both numerator and the denominator by 100.
a=2000
Divide 224000 by 112 to get 2000.
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