20. In a class of 40 students, the number of girls is1/3 of the number of boys. find the number of boys
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Answer:
Total students = 40
Let no. of boys be a,
No. of girls = 1/3a
Therefore, 1/3a + a = 40
1/3a + 3/3a = 40
4a = 40*3
a = 120/4
a = 30
Therefore no. of boys is a, which is = 30
No. of girls = 1/3 *a = 10.
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Step-by-step explanation:
27 is the answer just do what I am telling first do 40×1/3 the answer is 13.333333 and just substract it from 40 the answer is 27.333333
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