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sjaybanks4067
12.02.2021 •
Mathematics
La Masa de un objeto hecho de una aleación de oro y plata es de 354g.Inmerso en agua, cuya densidad es de 1g/cm3, sufre una pérdida aparente correspondiente a 20g de masa. Sabiendo que la densidad del oro es de 20g/cm3 y de la plata 10g/cm3, podemos afirmar que el objeto contiene la siguiente masa de oro:
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Ответ:
Hi!
We will solve this using the system of equations, like this:
x + y = 27
2x + 4y = 78
x = 27 - y
2 * (27 - y) + 4y = 78
54 - 2y + 4y = 78
2y = 24
y = 12
x = 27 - 12 = 15
There are 15 chickens and 12 puppies.
Hope this helps!