Ratio and Proportion of RS Aggarwal Class 7 Chapter 8 Exercise 8B Solution, All solutions are provided in detail and step by step therefore each students can understand the solution.
RS Aggarwal Class 7 Ex. 8b solution
Direct Access, RS Aggarwal Class 7 Chapter 8 Exercise 8a Solution
6: Find the fourth proportional to the numbers:
(i) 8, 36, 6
(ii) 5, 7, 30
(iii) 2.8, 14, 3.5
7: If 36, 54, x are in continued proportion, find the value of x.
9: Find the third proportional to:
(i) 8 and 12
(ii) 12 and 18
(iii) 4.5 and 6
10: If the third proportional to 7 and x is 28, find the value of x.
11: Find the mean proportion between:
(i) 6 and 24
(ii) 3 and 27
(iii) 0.4 and 0.9
12: What number must be added to each of the numbers 5, 9, 7, 12 to get numbers which are in proportion?
13: What number must be subtracted from each of the numbers 10, 12, 19, 24 to get the numbers which are in proportion?
14: The scale of a map is 1: 5000000. What is the actual distance between two towns, if they are 4 cm apart on the map?
15: At certain time a tree 6 m high casts a shadow of length 8 meters. At the same time a pole casts a shadow of length 20 meters. Find the height of the pole.
