The average score of boys in an examination of a school boy is 71 and that of girls is 73. The avera

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30 Apr 2013 Ratio

The average score of boys in an examination of a school boy is 71 and that of girls is 73. The average score of the school in that examination is 71.8. Ratio of the number of boys to the number of girls appeared in examination is...

OPtion

1) 1:2
2) 3:2
3) 2:3
4) 3:4
5) 4:3
6) 4:5
7) 5:4
8) 5:6
9) 6:5
10)None of these

Solution

let number of boys be x and number of girls be y
according to the given condition
(71x+73y)/(x+y)=71.8
71x+73y=71.8x+71.8y
x/y=3/2
option 2

Correct Option: 2 Best Solution (0)