The statement "300 is between 100 and 400" is equivalent to:
100 < 300 < 400
Or the equivalent:
300 > 100 AND 300 < 400.
If you check these statements and see that they are true, then 300 is between the two numbers.
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It means: CCC = 100+100+100 = 300
Percent means out of 100, so put it over 100 and simplify: 112⅓ % = 112⅓/100 = (112⅓×3)/(100×3) = 337/300 = 1 37/300
Let Q be the quantity of 80% solution required then (300 - Q) is the quantity of 30% solution as together the two solutions must equal 300. Then, [80 x Q] + [30 x (300 - Q)] = [40 x 300] 80Q + 9000 - 30Q = 12000 50Q = 3000 Q = 60...........which means (300 - Q) = 240 60ml of 80% acid solution + 240ml of 30% solution produces 300ml of 40% solution.
100
assuming question means percent 300 = 100% 30 = 10% 90 = 30% though 30 x 300 = 9,000