what should be the reading after you adjust the pressure?

Question

The pressure gauge on the injection molding has a reading of 760. Your quality team has ask you to decrease the pressure by 10 percent. whats the reading after pressure adjusted?

(just an answer)

Answer 1

Decrease by 10% means the same as keeping it at 90% of original.

Thus 760 x 0.90 = 684 (mm Hg presumably).

Answer 2

"Just an answer" should never be given any credit for any problem. This is one of the major faults of multiple-choice tests.   If I cannot have any confidence in the source of the information or the process of arriving at the answer, I truly have "Fake News."  Quality teams will not accept "just an answer!"  One of my best quotes:  "With good people, a better process usually produces a better product." -- d.w.

 

760 decreased by 10%

 760     -             (10/100)*760       [10% is (10/100) or 0.10 as needed by the problem]

   760 - 76

  [PLZ subtract for the number]