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Emptypockets451
24.09.2019 •
Mathematics
Amira has $80. sasha has $40.
in how many months will they both have the same amount of money if amira saves $40 per month and sasha saves $50?
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Ответ:
Amira = 80
Sasha = 40
Amira saves 40 per month
Sasha saves 50 per month
Let x be the number of months.
Amira = 80 + 40x
Sasha = 40 + 50x
Amira = Sasha
80 + 40x = 40 + 50x
40x - 50x = 40 - 80
-10x = -40
x = -40/-10
x = 4
Amira = 80 + 40x = 80 + 40(4) = 80 + 160 = 240
Sasha = 40 + 50x = 40 + 50(4) = 40 + 200 = 240
It would take them 4 months to have the same amount of savings.
Ответ: