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Class 9th

Class 9 Maths Exercise 9.1 – Proposition and Converse Class 9 Maths – Exercise 9.1 Proposition and Converse – Complete Solutions 📘 For Students: This page contains simple, step-by-step solutions of Exercise 9.1. Important propositions, converses, examples and counterexamples are explained in an easy-to-understand way. Question 1. If two lines are parallel, then corresponding angles formed by a transversal are equal. Given: Two parallel lines are cut by a transversal. To prove: Corresponding angles are equal. Solution: When two parallel lines are cut by a transversal, the corresponding angles are equal. Therefore, corresponding angles are equal. Converse: If corresponding angles are equal, then the two lines are parallel. Question 2. If a quadrilateral is a square...
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Mixture & Alligation

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 Q1. In a mixture of 25 litres, the ratio of acid to water is 4 : 1. Another 3 litres of water is added to the mixture. The ratio of acid to water in the new mixture is Ans. 5:2 Q2. In a mixture of 24 L, the ratio of acid to water is 3:5. 6Lwater is added to the mixture. The ratio of acid to water in the new mixture is? Ans. 3:7 Q3. 200 litres of a mixture contains milk and water in the ratio 17: 3. After the addition of some more milk to it, the ratio of milk to water in the resulting mixture becomes 7: 1. The quantity of milk added to it was. Ans. 40 ltrs Q4. In a mixture, milk and water are in ratio of 2: 3. Some milk is added to the mixture because of which ratio of milk water becomes 2:1. How much milk added as a percentage of initial mixture. Ans. 80% Q5. In a mixture, milk and water are in ratio of 1: 4. Some milk is added to the mixture because of which ratio of milk and water becomes 2: 1. How much milk was adddd as a percentage of initial mixture? Ans. 140% Q6. A can cont...
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Percentage

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A A man multiply a number by 3/5 instead of 5/3. Find the percentage change in his result
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