In this chapter, we provide RD Sharma Class 7 ex 9.3 Solutions Chapter 9 Ratio and Proportion for English medium students, Which will very helpful for every student in their exams. Students can download the latest RD Sharma Class 7 ex 9.3 Solutions Chapter 9 Ratio and Proportion Maths pdf, Now you will get step by step solution to each question.

RD Sharma Solutions for Class 7 Chapter 9 Ratio and Proportion Ex 9.3 Download PDF

Chapter 9: Ratio and Proportion Exercise – 9.3

Question: 1

Which of the following are in proportion?

(i) 33, 44, 66, 88

(ii) 46, 69, 69, 46

(iii) 72, 84, 186, 217

Solution:

Question: 2

Find x in the following proportions

(i) 16:18 = x: 96

(ii) x: 92 = 87: 116

Solution:

Question: 3

The ratio of income to the expenditure of a family is 7: 6. Find the savings if the income is Rs.1400.

Solution:

The ratio of income and expenditure = 7: 6

7x = 1400

x = 200

Expenditure = 6x = 6 × 200 = Rs.1200

Savings = Income – Expenditure

= 1400 -1200

= Rs.200

Question: 4

The scale of a map is 1: 4000000. What is the actual distance between the two towns if they are 5cm apart on the map?

Solution:

The scale of map = 1: 4000000

Let us assume the actual distance between towns is x cm

1: 4000000 =5: x

x = 5 × 4000000 = 20000000 cm

1km = 1000 m

1m = 100 cm

Therefore

x = 200 km

Question: 5

The ratio of income of a person to his savings is 10: 1. If his savings for one year is Rs.6000, what is his income per month?

Solution:

The ratio of income of a person to his savings is 10: 1

Savings per month = 6000/12

= Rs.500

Then let income per month be x

x: 500 = 10:1

x = 500 × 10

x = 5000

Question: 6

An electric pole casts a shadow of length 20 metres at a time when a tree 6 metres high casts a shadow of length 8 metres. Find the height of the pole

Solution:

Height of the tree: Length of the shadow of tree

Height of the pole: Length of the shadow of pole

x: 20 = 6: 8

x = 120/8

x = 15

All Chapter RD Sharma Solutions For Class 7 Maths

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.