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Kazeer [188]
3 years ago
8

in a school , 4/9 of the students are boys and number of girls is 90 . find the number of boys in school

Mathematics
2 answers:
const2013 [10]3 years ago
8 0

Step-by-step explanation:

I am so sorry I just answered because I need points for my exam

il63 [147K]3 years ago
7 0

4/9 of the students are boys thus 5/9 students are girls.

Let " x " be the number of all students.

So we have :

5/9 × x = 90

Multiply both sides by 9/5

5/9 × 9/5 × x = 90 × 9/5

1 × x = 9 × 9 × 10 × 1/5

x = 81 × 2

x = 162

_______________________________

number of boys = 4/9 × x

n o boys = 4/9 × 162

n o boys = 162/9 × 4

n o boys = 18 × 4

n o boys = 72

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