Solve Mixture Math Problem Using Average Formula. BASIC OF MIXTURE (Written + MCQ). Lecture-01

**Correction of spelling Weighted instead Waighted.

Math we will solve in this video:

1. Easy Problem: In a class of 60 students, the average height of 35 boys is 65 and the average height of 25 girls is 62 inches. Find the average height of the 60 students of the whole class.

2. Medium Problem: 60 liters of solution with 20% glycerin mixed with 40 liters of solution with 30% glycerin. What is the percentage (%) of glycerin in the new solution?

3. Past Year Problem: A mixture of 20 kg spirit and water contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25%? (PKB-SO-2018)

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