Book: NCERT - Mathematics
Chapter: 13. Direct and Inverse Proportions
Subject: Maths - Class 8th
Q. No. 1 of Exercises 13.1
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1
Following are the car parking charges near a railway station upto
Check if the parking charges are in direct proportion to the parking time.
The ratio of parking charges to their respective number of hours may be calculated as
60/4 = 15
100/8 = 25/2
140/12 = 35/3
180/24 = 15/2
As, each ratio is not same therefore, the parking charges to their respective number of hours are not in direct proportion.
1
Chapter Exercises
More Exercise Questions
2
A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of base that need to be added.
Parts of Red Pigment | 1 | 4 | 7 | 12 | 20 |
Parts of base | 8 |