Comparing Quantities Using Ratio
Comparing Quantities Using Ratios
Quantities can be compared using ratios. the quantities can be be compared is they are of the same type and in same units. Comparison between two becomes meaningless if they are not of the same kind of they are not expressed in same units. For example it is meaningless to compare 25 pencils to 35 oranges. Also to compare Kg with grams will not give proper results. So before comparing they must be expressed in the same units.
Illustration: Robin worked for 8 hours and Rubin worked for 2 hours. How many times Robin’s working hours as compared to Rubin working hours?
Solution: Working hours of Robin = 8 hours Working hours of Rubin = 2 hours The ratio of working hours of Robin to Rubin = 8 : 2 = 4 : 1.
Therefore, Robin works four times more than Rubin works.
Nancy had 11 books and Lucy had 33 books. How many times Lucy had books as compared to Nancy? | |||
| Right Option : B | |||
| View Explanation | |||
Monthly salary of Roma is 25000 Rs, Monthly Salary of Supriya is 35000 and Monthly Salary of Krishma is 30000 . How many times is Krishma salary to that of Supriya? | |||
| Right Option : B | |||
| View Explanation | |||
Find the ratio of Speed of a cycle 15 km per hour to the speed of scooter 30 km per hour ? | |||
| Right Option : B | |||
| View Explanation | |||
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