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.
|Chapter Name||Ratio and Proportion|
RD Sharma Solutions for Class 7 Chapter 9 Ratio and Proportion Ex 9.3 Download PDF
Chapter 9: Ratio and Proportion Exercise – 9.3
Which of the following are in proportion?
(i) 33, 44, 66, 88
(ii) 46, 69, 69, 46
(iii) 72, 84, 186, 217
Find x in the following proportions
(i) 16:18 = x: 96
(ii) x: 92 = 87: 116
The ratio of income to the expenditure of a family is 7: 6. Find the savings if the income is Rs.1400.
The ratio of income and expenditure = 7: 6
7x = 1400
x = 200
Expenditure = 6x = 6 × 200 = Rs.1200
Savings = Income – Expenditure
= 1400 -1200
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?
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
x = 200 km
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?
The ratio of income of a person to his savings is 10: 1
Savings per month = 6000/12
Then let income per month be x
x: 500 = 10:1
x = 500 × 10
x = 5000
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
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
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