100
Rounded up to the nearest tens would be 100. Rounded to the nearest tens is 90.
100
I presume you are asking for the equivalent single percentage discount when first 50% is applied, then 10%, then 10%, then 5% then 5%, ie 95% of 95% of 90% of 90% of 50% of the original price is being paid, so the total discount is 100% - this: 95% of 95% of 90% of 90% of 50% = 95/100 x 95/100 x 90/100 x 90/100 x 50/100 = 3655125/10000000 = 36.55125 % ≈ 36.55 % So the discount is approx 100% - 36.55% = 63.45 %
If rounding to nearest 100, then 51. (50 should be rounded DOWN to 0.) If rounding to the nearest 10, then 95.
It is: 100 and not 90
(100 + 90) ÷ 2 = 95
The average of 90 and 100 is 95.
90
100
100
100
90
80 to 100
100
100
It is: 100