First, I would base the problem out of 100, since that is how percentages work. Therefore, if 25% buy both bread and milk, then 40-25= 15 only buy milk, and 30-25= 5 only buy bread. Add 15+5+25= 45, and 100-45= 54. Hence, 54% of all convenience store shoppers buy neither bread nor milk.
Neither. A person should always ask: "what is the percentage?" or "how great is the percentage?"
Directly, neither. However, if you know the true value you can calculate the range.
Neither, a tax in which everyone pays the same percentage is called a flat tax.
A percentage is a pure, dimensionless number. It has neither length, nor area, volume, mass, temperature or any other dimension.
Neither. Some fractions are bigger than some percentages and some are smaller.
Neither. It is found in eukaryotes, with the exception of yeasts.
75 out of 100 is neither a good nor bad percentage. The commutative average as a GPA would be 2.0.
It is recorded as neither. It is always recorded as litres per hamburger.
Zero: Iodine and sodium are both chemical elements, and neither contains any of the other, as is true for all pairs of different elements,
The public debt as a percentage of real GDP in the United States is neither particularly high or low relative to such debt percentages in other advanced industrial nations.
Neither
Neither. Bronze is an alloy of multiple metals. Usually copper and tin are by far the largest percentage but there are many alloys known of as bronze with different 'recipes'.