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West Bengal - Mathematics

12. Mixture

1. Revision
2. Pie Chart
3. Rational Numbers
4. Multiplication and Division of Polynomials
5. Cubes
6. Complementary Angles, Suplementary Angles and Adjacent Angles
7. Concept of Vertically Opposite Angles
8. Properties of Parallel Lines and Their Transversal
9. Relation Between the Two Sides of a Triangle and Their Opposite Angles
10. Rule of Three
11. Percentage
12. Mixture
13. Factorisation of Algebraic Expressions
14. HCF and LCM of Algebraic Expression
15. Simplification of Algebraic Expression
16. Verification of the Relation Between the Angles and Sides of a Triangle
17. Time and Work
18. Graphs
19. Formation of an Equation and its Solution
20. Geometrical Proofs
21. Construction of Triangles
22. Construction of Parallel Lines
23. Dividing a Line Segment into Three or Five Equal Parts

Lets Work Out 12

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Q. 64.2( 17 Votes )

In two different

Class 8th West Bengal - Mathematics 12. Mixture

Answer :

The ratio of mixture of soda and soap in first kind of washing powder = 2:3

The ratio of mixture of soda and soap in second kind of washing powder = 4:5

Concentration of soap as fractions in first kind washing powder

Concentration of soap as fractions in second kind washing powder →

mixing 10 kg of first washing powder with 18kg of second washing powder, then →

Quantity of new washing powder = (10 + 18) kg = 28 kg

Quantity of soap in new washing powder

= 6 + 10 = 16 kg

Quantity of soda in new washing powder = 28 – 16 = 12 kg

Hence, ratio of soda to soap = 12:16

= 3: 4

Part of soap water in the new washing powder is 4/7.

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