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Answer :

Let Meena’s salary by Rs. x.

\(\therefore \)10% of x = Rs. 400

Or, \(\frac{10}{100} \) × x = Rs. 400

Or,, x = \(\frac{400×100}{10} \)=Rs. 400

Thus, her salary is ? 4000.

- Q.1 Convert the given fractional numbers to percent. (a) \(\frac{1}{8} \) (b) \(\frac{5}{4} \) (c) \(\frac{3}{40} \) (d) \(\frac{2}{7} \)
- Q.2 Convert the given decimal fractions to per cents: (?) 0.65 (b) 2.1 (c) 0.02 (d) 12.35
- Q.3 Estimate what part of the figures is coloured and hence find the per cent which is coloured.
- Q.4 Find: (a) 15% of 250 (b) 1% of 1 hour (c) 20% of Rs. 2500 (d) 75% of 1 kg
- Q.5 Find the whole quantity if (a) 5% of it is 600 (b) 12 % of it is? 1080 (c) 40% of it is 500 km (d) 70% of it is 14 minutes (e) 8% of it is 40 litres
- Q.6 Convert given per cents to decimal fractions and also to fractions in simplest forms: (a) 25% (b) 150% (c) 20% (d) 5%
- Q.7 In a city, 30% are females, 40% are males and remaining are children. What per cent are children?
- Q.8 Out of 15,000 voters in a constituency, 60% voted. Find the Percentage of voters who did not vote. Can you now find how many actually did not vote?
- Q.10 A local cricket team played 20 matches in one season. It won 25% of them. How many matches did they win?

- NCERT solutions for class 7 maths chapter 1 Integers
- NCERT solutions for class 7 maths chapter 2 Fractions and Decimals
- NCERT solutions for class 7 maths chapter 3 Data Handling
- NCERT solutions for class 7 maths chapter 4 Simple Equations
- NCERT solutions for class 7 maths chapter 5 Lines and Angles
- NCERT solutions for class 7 maths chapter 6 The Triangle and its Properties
- NCERT solutions for class 7 maths chapter 7 Congruence of Triangles
- NCERT solutions for class 7 maths chapter 8 Comparing Quantities
- NCERT solutions for class 7 maths chapter 9 Rational Numbers
- NCERT solutions for class 7 maths chapter 10 Practical Geometry
- NCERT solutions for class 7 maths chapter 11 Perimeter and Area
- NCERT solutions for class 7 maths chapter 12 Algebraic Expressions
- NCERT solutions for class 7 maths chapter 13 Exponents and Powers
- NCERT solutions for class 7 maths chapter 14 Symmetry
- NCERT solutions for class 7 maths chapter 15 Visualising Solid Shapes

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- NCERT solutions for class 7 science chapter 2 Nutrition In Animals
- NCERT solutions for class 7 science chapter 3 Fibre to Fabric
- NCERT solutions for class 7 science chapter 4 Heat
- NCERT solutions for class 7 science chapter 5 Acids Bases and Salts
- NCERT solutions for class 7 science chapter 6 Physical and Chemical Changes
- NCERT solutions for class 7 science chapter 7 Weather, Climate and Adaptations of Animals to Climate
- NCERT solutions for class 7 science chapter 8 Winds, Storms and Cyclones
- NCERT solutions for class 7 science chapter 9 soil
- NCERT solutions for class 7 science chapter 10 Respiration in Organisms
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- NCERT solutions for class 7 science chapter 13 Motion and Time
- NCERT solutions for class 7 science chapter 14 Electric Current and Its Effects
- NCERT solutions for class 7 science chapter 15 Light
- NCERT solutions for class 7 science chapter 16 Water: A Precious Resource
- NCERT solutions for class 7 science chapter 17 Forests: Our Lifeline
- NCERT solutions for class 7 science chapter 18 Waste Water Story