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.
Monthly salary of Roma is 12500 Rs and Monthly Salary of Krishma is 25000. How many times is Roma salary to that of Krishma? | |||
| Right Option : C | |||
| 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 | |||
Smith studied for 9 hours and Susan studied for 12 hours. How many times Smith studied as compared to Susan? | |||
| Right Option : D | |||
| View Explanation | |||
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