Q. 504.7( 28 Votes )
90% and 97% pure acid solutions are mixed to obtain 21 litres of 95% pure acid solution. Find the quantity of each type of acids to be mixed to form the mixture.
Answer :
Let the quantity of 90% acid solution be x litres.
∴ quantity of 97% acid solution = (21 - x) litres
Now,
90% of x + 97% of (21 - x) = 95% of 21
⇒ 7x = 21(97 - 95)
⇒ 7x = 42
⇒ x = 6
Thus, 90% acid solution = 6 litres
97% acid solution = 21 - 6 = 15 litres
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Dealing With the Real Life Problems53 mins
Quiz | Solution of Linear Equations53 mins
Champ Quiz | Consistency and Inconsistency of Solutions36 mins
Pair of Linear Equations in Two Variables46 mins
Dealing with the Real Life Problems54 mins
Smart Revision | Important Word Problems37 mins
Quiz | Real Life Problems Through Linear Equations56 mins
Elimination (quicker than quickest)44 mins
Bonus on Applications of Linear Equations in Two Variables43 mins
Consistent and Inconsistent Equations33 mins
Dealing With the Real Life Problems53 minsQuiz | Solution of Linear Equations53 minsChamp Quiz | Consistency and Inconsistency of Solutions36 minsPair of Linear Equations in Two Variables46 minsDealing with the Real Life Problems54 minsSmart Revision | Important Word Problems37 minsQuiz | Real Life Problems Through Linear Equations56 minsElimination (quicker than quickest)44 minsBonus on Applications of Linear Equations in Two Variables43 minsConsistent and Inconsistent Equations33 minsTry our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
RELATED QUESTIONS :
Solve the following pairs of equations
Solve the following pairs of equations
Solve for x and y: 
Sum of the areas of two squares is 400 cm2. If the difference of their perimeters is 16 cm, find the sides of the two squares.
Mathematics - Board Papers
