paper and plastic
40 percent
30%
((16x40) +(18x60))/100 = 17.2
muscular tissue
Muscle tissue makes up around 40-50% of a person's body mass. The percentage can vary based on factors like age, gender, and fitness level.
About 40 percent of bone is made of moisture. Sixty percent of the bone is made of minerals such as calcium.
All percentages are in mass% and all quantities are in grams (mass), be sure do not to take volumes into account because mass is 'additive', volumes are not quantitatively additable!Answer: Take whatever mass of 60 percent solution you have, multiply that mass by 20 (=60-40) and then divide that amount by 40, this is how much water to add to get an 40% solution.Example: Suppose you have 100 gram of 60% solution, then you should add:100 * (60-40)/40 = 100*0.50 = 50 gram of water; this is to be added to 100 gram of 60% solution to get (50 + 100 =) 150 gram of 40% solution.(see on top of the page to know why this calculation method is not valid for 'volumes')
40%
The Elite
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Mass percent = Mass of part / Total Mass * 100% Atomic mass of calcium = 40 Molecular mass of calcium bicarbonate = 162 40 / 162 *100 = 24.7% Calcium by weight in a Calcium Bicarbonate Molecule.
About 40 percent of the world's newspapers are printed on paper made in Canada.