Tiwari Academy Discussion

Asked: March 22, 2021In: Class 7 Maths

(i) Chalk contains Calcium, Carbon and Oxygen in the ratio 10:3:12. Find the percentage of Carbon in chalk. (ii) If in a stick of chalk, Carbon is 3 g, what is the weight of the chalk stick?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 7

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

I buy a T.V. for ₹10,000 and sell it at a profit of 20%. How much money do I get for it?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 5

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

Juhi sells a washing machine for ₹13,500. She loses 20% in the bargain. What was the price at which she bought it?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 6

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

Arun bought a car for ₹3,50,000. The next year, the price went up to ₹3,70,000. What was the percentage of price increase?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 4

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

Convert each part of the ratio to percentage: (a) 3 : 1 (b) 2 : 3 : 5 (c) 1 : 4 (d) 1 : 2 : 5

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 2

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

Tell what is the profit or loss in the following transactions. Also find profit percent or loss percent in each case. (a) Gardening shears bought for ₹ 250 and sold for ₹ 325. (b) A refrigerator bought ₹12,000 and sold at ₹ 13,500. (c) A cupboard bought for ₹ 2,500 and sold at ₹ 3,000. (d) A skirt bought for ₹ 250 and sold at ₹ 150.

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.3 NCERT Books for Session 2022-2023 CBSE Board Questions No: 1

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

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 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.2 NCERT Books for Session 2022-2023 CBSE Board Questions No: 10

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

Meeta saves ₹ 400 from her salary. If this is 10% of her salary. What is her salary?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.2 NCERT Books for Session 2022-2023 CBSE Board Questions No: 9

Vanishree Singh

Asked: March 22, 2021In: Class 7 Maths

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?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.2 NCERT Books for Session 2022-2023 CBSE Board Questions No: 8

Vanishree Singh

Asked: March 22, 2021In: Class 8 Maths

In a city, 30% are females, 40% are males and remaining are children. What percent are children?

NCERT Solutions for Class 7 Mathematics Chapter 8 Important NCERT Questions Class vii Math Chapter 8 Comparing Quantities Exercise 8.2 NCERT Books for Session 2022-2023 CBSE Board Questions No: 7

(i) Chalk contains Calcium, Carbon and Oxygen in the ratio 10:3:12. Find the percentage of Carbon in chalk. (ii) If in a stick of chalk, Carbon is 3 g, what is the weight of the chalk stick?

I buy a T.V. for ₹10,000 and sell it at a profit of 20%. How much money do I get for it?

Juhi sells a washing machine for ₹13,500. She loses 20% in the bargain. What was the price at which she bought it?

Arun bought a car for ₹3,50,000. The next year, the price went up to ₹3,70,000. What was the percentage of price increase?

Convert each part of the ratio to percentage: (a) 3 : 1 (b) 2 : 3 : 5 (c) 1 : 4 (d) 1 : 2 : 5

A local cricket team played 20 matches in one season. It won 25% of them. How many matches did they win?

Meeta saves ₹ 400 from her salary. If this is 10% of her salary. What is her salary?

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?

In a city, 30% are females, 40% are males and remaining are children. What percent are children?

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