In a class the number of students is 84, If there where six boys more and six girls less, then the ratio of boys and girls is 5: 2. Find the number of boys in the class.
60
30
51
58
A
51
B
60
C
58
D
30
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Solution
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Let the number of boys=x
Number of girls be =y
x+y=84 ………(1)
x+6y−6=52
2x+12=5y−30
2x−5y=−42 ………(2)
Solving equation (1) and (2)
we get
x=54
y=30.
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