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Question 72
In class there are a total of 60 boys and girls. Which of the following can’t represent the ratio of the numberof boys and girls in the class?
Solution
In class there are a total of 60 boys and girls.
Let x = 60, Now checking all the options,
A 2 : 3 => 2x+3x = 5x = 60 =>x =12
1 : 3 => 1x+3x = 4x = 60 =>x =15
1 : 6 => 1x+6x = 7x = 60 =>x =8.571 (Value is in decimal)
3 : 7 => 3x+7x = 10x => 60 =>x =6
Option C is correct.
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