20. In a class of 40 students, the number of girls is 1/3 of the number of boys. Find the number of boys.
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Answered by
3
Let the number of boys be x
No. Of girls= x/3
According to the question, x + x/3 = 40
4x/3 = 40
X = (3×40)4 = 30
Number of boys = 30
Answered by
3
Answer:
total no of students 40
number of boys x
number of girls is (1\3)x
total=(1\3)x+x=40
4x\3=40
x/3=10
x=30
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