Sabendo que os números A, 12 e 15 são diretamente proporcionais aos números 28, B e 20, determine os números A e B.
28/a = b/12 = 20/15
28/a = b/12 = 4/3
b/12 = 4/3
b = 12 × 4/3
b = 48/3
b = 16
28/a = 16/12 = 4/3
28/a = 4/3 = 4/3
28/a = 4/3
a = 28 ÷ 4/3
a = 28 × 3/4
a = 84 ÷ 4
a = 21
Conferindo:
28/21 = 16/12 = 20/15
4/3 = 4/3 = 4/3
______________________________________________________________________________
A = 21
B = 16
_______________________________________________________________________
Espero ter ajudado!
A=35
B=15
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Verified answer
28/a = b/12 = 20/15
28/a = b/12 = 4/3
b/12 = 4/3
b = 12 × 4/3
b = 48/3
b = 16
28/a = b/12 = 4/3
28/a = 16/12 = 4/3
28/a = 4/3 = 4/3
28/a = 4/3
a = 28 ÷ 4/3
a = 28 × 3/4
a = 84 ÷ 4
a = 21
Conferindo:
28/a = b/12 = 20/15
28/21 = 16/12 = 20/15
4/3 = 4/3 = 4/3
______________________________________________________________________________
A = 21
B = 16
_______________________________________________________________________
Espero ter ajudado!
A=35
B=15