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In a class of 60 students, the number of boys and girls
participating in the annual sports is in the ratio 3 : 2
respectively. The number of girls not participating in the
sports is 5 more than the number of boys not participating
in the sports. If the number of boys participating in the
sports is 15, then how many girls are there in the class?
(1) Data inadequate
(2) 20
(3) 25
(4) 30
(5) None of these
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Answer / suchi teegala
let no. of boys not participating be x
then the no. of girls not participating = x+5
no. of boys : girls participating = 3:2
given no.of boys participating = 15
therefore, the ratio is now 15:y(say)
then 3:2 = 15 : x
on solving 3/2 =15/y ie.., 3y =30 we get y =10
hence no. of girls participating =10
therefore total no of students paricipating = 15+10=25
total no of students in class =60 given
hence no. of students not participating = 60-25=35
therefore x+(x+5)=35
2x=30
x=15
therfore no of girls not participating =15+5=20
therefore total no of girls in class = no of girls
participating + no of girls not participating
=10+20
=30 is the answer
| Is This Answer Correct ? | 12 Yes | 0 No |
Answer / vidsln_2
let total no .of students participating sports=x
participating ratio =3:2
no of boys participating in the sports= 15
so, (3/5)*x=15
=25
no.of students not participating sports=60-25=35
v have, no.of non attending boys=y
no.of nn attending girls=y+5
so. y+y+5=35
y=15
no.of boys in the class=participating+ non participating
= 15+15=30
no.of girls in the class=total-no.of boys
=60-30
=30
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / s thirumala sai
Let number of boys be b and number girls be g.
boys_players : girl_player = 3:2 ----------> (1)
But, boys_players = 15 -------------------------> (2)
From (10 & (2) ,
3 parts = 15
2 parts = ? Ans:10 [ (15/3)*2 ]
i.e; girl_players = 10
Total players (boys & girls) =15+10=25 (or find directly
for 7 parts)
Total non-players = 60-25=35
Let x be the number of girls who doesn't participated.
Then x + (x-5) = 35 [from the given data]
=> 2x-5=35
=>2x = 40
=> x=20
Total number of girls=playing girls + not playing girls
= 10 + 20
=30
b+g=60 [from the given data]
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / ravi teja kantipudi
Total number in class, a=60
total number of boys participating, b=15
ratio of gals to boys participating is 3:2
so total number of gals participating is 10
so total number of boys and gals not participating are 35
total number of boys not participating let say 'x'
total number of gals not participating is 'x+5'
so total number is equal is to 35
=> x+x+5=35
=> 2x=30
=> x=15
so gals not participating are 20
so total number of gals in the class are 30
answer is (4)
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / s thirumala sai
Answer : option 4
boys_players : girl_player = 3:2 ----------> (1)
But, boys_players = 15 -------------------------> (2)
From (10 & (2) ,
3 parts = 15
2 parts = ? 10 [ (15/3)*2 ]
i.e; girl_players = 10
Total players (boys & girls) =15+10=25 (or find directly
for 7 parts)
Total non-players = 60-25=35
Let x be the number of girls who doesn't participated.
Then x + (x-5) = 35 [from the given data]
=> 2x-5=35
=>2x = 40
=> x=20
Total number of girls=playing girls + not playing girls
= 10 + 20
=30
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / vignesh1988i
the no. of girls in class is 30.....
the clue here to find out the total no. of boys and girls is the ratio given (3:2)....
thank u
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ahtesham
No. of boys participating in sports:B=15
therefore no. of girls participating in sports:G
as ratio is 3:2=B:G
3/2=B/G
G=(15*2)/3
G=10
No. of students not participating in sports=60-(15+10)=35
Let x be the no. of girls not participating in sports.
then x + (x-5)=35
x=15
total no. of girls in class=15+10=25
| Is This Answer Correct ? | 5 Yes | 5 No |
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