the number of boys and girls in a class are in ratio of 7:5. the number total no of boys and girls are 96 than the no of girls are
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Answered by
1
let boys be as 7x and girls be 5x
Therefore,
7x + 5x = 96 (since,total no. of students is 96)
12x = 96
x = 96/12 = 8
The no. of girls are
5x = 5×8 = 40
Therefore,
7x + 5x = 96 (since,total no. of students is 96)
12x = 96
x = 96/12 = 8
The no. of girls are
5x = 5×8 = 40
Answered by
0
Boys = b
Girls = g
The number of boys and girls in a class are in the ratio 7:5
b:g=7:5
b/g=7/5
b5=g7
b5/5=g7/5
b=g7/5...............(1)
the number of boys is 8 more than the number of girls
b=g+8.............(2)
Put the value of b from (1) to (2)
g7/5=g+8
5*(g7/5)=5*(g+8)
g7=5g+40
g7-g5=40
2g=40
2g/2=40/2
g=20
Put the value of g in (2)
b=20+8
b=28
Boys are 28 and Girls are 20
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