Question 1163359
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Problem 1.   Calculation is incorrect.  It should be redone.



Problem 2.    Correct.



Problem 3.    Correct.
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Comment from student: Thank you so much for quick response. On Problem 1 I made mistake - it should be 90 kg - 0.518 kg = 89.482 
Could you verify that this subtraction problem above is correct? Thanks so much
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<U>My response</U> :  &nbsp;&nbsp;This simple arithmetic is done correctly.