Question

Calculati numerele x si y din proportia x supra 6 = y supra 4, stiind ca suma lor este 60

Answer 1

x =?, y = ?
x/6 = y/4
x+y = 60, x = 60-y
Rezolvare :
x/6 = y/4, x = 6y/4
6y/4+y = 60, (6y+4y)/4 = 60, 10y = 4*60, 10y = 240,
y = 240/10, y = 24
x = 60-y = 60-24 = 36
Deci avem :
x = 36
y = 24
Verificare : 6/36 = 4/24
6*24 =4*36
144 = 144 (A).
Mult succes !

Answer 2

x/6 =y/4=> 4x=6y
x+y=60 => x=60-y
4 (60-y)=6y
240-4y=6y
240=10y=> y=24
x=60-24=36