In this chapter, we provide RS Aggarwal Solutions for Class 7 Chapter 10 Percentage Ex 10B for English medium students, Which will very helpful for every student in their exams. Students can download the latest RS Aggarwal Solutions for Class 7 Chapter 10 Percentage Ex 10B Maths pdf, free RS Aggarwal Solutions Class 7 Chapter 10 Percentage Ex 10B Maths book pdf download. Now you will get step by step solution to each question.

Textbook | NCERT |

Class | Class 7 |

Subject | Maths |

Chapter | Chapter 10 |

Chapter Name | Percentage |

Exercise | 10B |

**RS Aggarwal Solutions for Class 7 Chapter 10 Percentage Ex 10B Download PDF**

**Question 1.****Solution:**

Rupesh seemed 495 marks out of 750

Percentage of marks = 495750 x 100 = 66%

**Question 2.****Solution:**

Monthly salary = Rs. 15625

Increase = 12%

Amount of increase = 15625×12100 = Rs. 1875

New salary = Rs. 15625 + Rs. 1875 = Rs. 17500

**Question 3.****Solution:**

Excise duty in the beginning = Rs. 950

Reduced duty = Rs. 760

Reduction = Rs. 950 – Rs. 760 = Rs. 190

Reduction percent = 190×100950 = 20%

**Question 4.****Solution:**

Let x be the total cost of the T.V

96% of x = 10464

Total cost of T.V = Rs. 10900

**Question 5.****Solution:**

Let number of students = x

In a school boys = 70%

girls = 100 – 70 = 30%

Now 30% of x = 504

Number of boys = 1680 – 504 = 1176

and number of total students = 1680

**Question 6.****Solution:**

Copper required = 69 kg

copper in ore = 12%

Let quantity of ore = x kg

12% of x = 69

Quantity of ore = 575kg

**Question 7.****Solution:**

Pass marks = 36%

A students gets marks = 123

But failed by 39 marks

Pass marks = 123 + 39 = 162

Now, 36% of maximum marks = 162

Maximum marks = 162×10036 = 450 marks

**Question 8.****Solution:**

Let number of apples = x

Number of apples sold = 40% of x

Hence number of apples = 700

**Question 9.****Solution:**

Let total number of examinees = x

the numbers of examinees who passed = 72% of x

= xx72100

= 18×25

**Question 10.****Solution:**

Let the gross value of moped = x

Amount of commission = 5% of x

**Question 11.****Solution:**

Total gunpowder = 8 kg

Amount of nitre = 75%

amount of sulphur = 10%

Rest of powder which is charcoal = 100 – (75 + 10) = 100 – 85 = 15 = 15%

Amount of charcoal = 8 x 15100 = 120100

= 65 kg = 1 kg 200 grams = 1.2 kg

**Question 12.****Solution:**

Quantity of chalk = 1 kg or 1000 g

**Question 13.****Solution:**

Let total number of days on which the

school open = x

and Sonal’s attendance = 75%

x x 75% = 219

No. of days on which was school open = 292 days

**Question 14.****Solution:**

Rate of commission = 3%

Amount of commission = Rs. 42660

Let value of property = x

then 3% of x = 42660

**Question 15.****Solution:**

Total votes of the constituency = 60000

Votes polled = 80% of total votes

= 80100 x 60000 = 48000

Votes polled in favour of A = 60% of polled votes

= 60100 x 48000 = 28800

Votes polled in favour of B = 48000 – 28800 = 19200

**Question 16.****Solution:**

Let original price of shirt = Rs. x

Discount = 12%

Original price of shirt = Rs. 1350

**Question 17.****Solution:**

Let original price of sweater = x

Rate of increase = 8%

Increased price = x + 8% of x

Hence, original price of sweater = Rs. 1450

**Question 18.****Solution:**

Let total income = x

**Question 19.****Solution:**

Let the given number = 100

Then increase % = 20%

Decrease = 100 – 96 = 4

Decrease per cent = 4%

**Question 20.****Solution:**

Let original salary of the officer = Rs. 100

Increase = 20%

**Question 21.****Solution:**

Rate of commission = 2% on first Rs. 200000

1 % on next Rs. 200000 and 0.5% on remaining price

Sale price of property = Rs.200000 + 200000 +140000 = Rs. 540000

Now commission earned by the

= Rs. 200000 x 2% + Rs. 200000 x 1% + 140000 x 0.5%

**Question 22.****Solution:**

Let Akhil’s income = Rs. 100

Then income of Nikhil’s will be = Rs. 100 – 20 = Rs. 80

Amount which is more than that of Akhil’s = 100 – 80 = Rs. 20

% age = 20×10080 = 25%

**Question 23.****Solution:**

Let income of Mr Thomas = Rs. 100

then income of John = Rs. 100 + 20 = Rs. 120

Income of Mr Thomas is less than John = Rs. 120 – 100 = Rs. 20

% age = 20×100120

= 503 = 1623 %

**Question 24.****Solution:**

Present value of machine = Rs. 387000

Rate of depreciation = 10%

Let 1 year ago the value of machine was = x

1 year ago, value of machine = Rs. 430000

**Question 25.****Solution:**

Present value of car = Rs. 450000

Rate of decreasing of value = 20%

Value after 2 years

**Question 26.****Solution:**

Present population = 60000

Rate of increase = 10%

Increased population after 2 years

**Question 27.****Solution:**

Let the price of sugar = Rs. 100

and consumption = 100 kg.

Increase price of 100 kg = Rs. 100 + 25 = Rs. 125

Now increased amount on 100 kg = Rs. 125

**All Chapter RS Aggarwal Solutions For Class 7 Maths**

—————————————————————————–**All Subject NCERT Exemplar Problems Solutions For Class** **7**

**All Subject NCERT Solutions For Class 7**

*************************************************

I think you got complete solutions for this chapter. If You have any queries regarding this chapter, please comment on the below section our subject teacher will answer you. We tried our best to give complete solutions so you got good marks in your exam.

If these solutions have helped you, you can also share rsaggarwalsolutions.in to your friends.