90, as it is the middle number when they are put into order:89, 89, 90, 90, 93, 93, 93.
90% of 93 = 90% * 93 = 0.9 * 93 = 83.7
560 decreased by 90 percent = 56
93% of 90 is 83.7
90
2780 decreased by 10% = 90% of 2780 = 2780*90/100 = 2502
The median of the numbers 93 90 90 75 70 68 is 82.5.
It is: 90-4.5 = 85.5
90
72
If you decrease something to 90, you have 90 left.
No, it is not.