Respuesta :

texaschic101
5 : 7.....add them = 12

5/12 * 60 = 300/12 = 25 kg
7/12 * 60 = 420/12 = 35 kg
dalendrk
60kg = 5x + 7x

12x = 60kg    |divide both sides by 12

x = 5kg

5:7 ⇒ 5x:7x ⇒ (5·5) : (7·5) ⇒ 25 : 35

Answer: 25kg and 35kg.