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bulgar [2K]
3 years ago
11

How many are boys if there are 4 girls less?​

Mathematics
2 answers:
Svetllana [295]3 years ago
7 0

Answer:

B=10

F=6

Step-by-step explanation:

100%......360

x%............225

x=225*100/360=62.5

so B=62.5%   , F=100-62.5=37.5%

37.5/100* n=62.5/100* n  -  4

37.5 n/100=(62.5n-400)/100

*100                 *100

37.5n=62.5n-400

62.5n-37.5n=400

25n=400

n=400/25

n=16

B=62.5*16/100=1000/100=10

Novay_Z [31]3 years ago
7 0
There are 10 boys :)
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