gigi239
09.04.2021 •
Mathematics
Solve it plz thank you sm
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Ответ:
Pedro ahorró: $ 480
Ana ahorró = $ 330
Step-by-step explanation:
Vamos a representar
La cantidad que Pedro ahorró = x
La cantidad que Ana ahorró = y
Por eso,
x + y = $ 810 Ecuación 1
Pedro ha ahorrado $ 150 más que Ana
x = 150 + y
Por lo tanto, sustituimos x por 150 + y
150 + y + y = 810
150 + 2y = 810
2 años = 810 - 150
2 años = 660
y = 660/2
y = $ 330
Resolviendo para x
= x = 150 + y
x = $ 150 + $ 330
x = $ 480
Por lo tanto,
Pedro ahorró: $ 480
Ana ahorró = $ 330