2. In a class of 30 students the number of girls is one
fifth of the number of the boys. How many boys are
there in the class?
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2. In a class of 30 students the number of girls is one
fifth of the number of the boys. How many boys are
there in the class?
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Total no. of students = 30
No. of girls = 1/5 * 30 = 6
No. of boys = 30–6 = 24
Answer:
no. of girls = 5
no. of boys = 25
Step-by-step explanation:
let the no. of girls be x
and no. of boys be y
according to question..
x= 1/5y
x+y = 30
1/5y + y = 30
y/5 + y =30
take L. C. M
y + 5y = 30 × 5
6y = 150
y = 150/6
y= 25
and
x+ y = 30
x + 25 = 30
x = 30-25
x = 5
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