In a school 5/8of the students are boys and the number of girls are 990,find the number.
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Let no. of girls be G and number of boys be B
5/8 of Total Students are boys
5/8 × (Total Students) = B
5/8 × (G+B) = B
Now, G = 990 (given)
So, 5/8 × (990+B) = B
5/8(990) + 5/8(B) = B
2475/4 = B - 5/8(B)
2475/4 =3/8(B)
12B = 19800
B = 1650
Number of boys is 1650
Total number of students is (1650+990) = 2640
5/8 of Total Students are boys
5/8 × (Total Students) = B
5/8 × (G+B) = B
Now, G = 990 (given)
So, 5/8 × (990+B) = B
5/8(990) + 5/8(B) = B
2475/4 = B - 5/8(B)
2475/4 =3/8(B)
12B = 19800
B = 1650
Number of boys is 1650
Total number of students is (1650+990) = 2640
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