Kasandra279 Kasandra279

21-07-2014
Mathematics

contestada

How much pure alcohol must be added to 400 ml of a 15% solution to make its strength 32%

Respuesta :

21-07-2014

Quantity of alcohol =400*15/100 = 60ml
x is pure alcohol which must be added : (x + 60)/(x + 400) = 32/100
100x + 6000 = 32x + 12800 => 68x = 6800 => x = 100
100ml pure alcohol must be added

Answer Link

Otras preguntas

Choose the correct simplification of (4x - 3)(3x^2 - 4x - 3).A) 12x^3 + 25x^2 + 9B) 12x^3 - 25x^2 - 9C) 12x^3 + 25x^2 - 9D) 12x^3 - 25x^2 + 9

Anna and ben are up for the same promotion at work. when it comes time to make a decision, the management committee chooses ben for the position because they th

What is the name for a molecule that is made of two sugers monomers boned together?

Why can inbreeding be potentially harmful to populations?

which of the following describes a person who leaves one country to permanently settle in another country

can someone help me please

The unemployment rate tends to actually underestimate the unemployment problem, especially during a recession, because ______.

Which quadrilateral will always have 4- fold reflectional symmetry

What did socialism become more popular in Europe during the 19th century? 1 There was a huge gap in wealth between factory owners and the people who worked in t

what is the value of the expression 2x2+3xy-y2, when x=2 And y=-4