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16.07.2019 •
Mathematics
In 2008, $1.00 u.s. bought 8.24 chinese yuan and in 2010 it bought 6.64 chinese yuan. how many u.s. dollars could 1 chinese yuan purchase in 2008 and 2010? a. 2008: .12 u.s. dollars; 2010: .15 u.s. dollars b. 2008: 1.2 u.s. dollars; 2010: 1.5 u.s. dollars c. 2008: .82 u.s. dollars; 2010: .66 u.s. dollars d. 2008: .15 u.s. dollars; 2010: .11 u.s. dollars
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Ответ:
1d = 8.24y
1d/8.24 = 8.24y/8.24
0.12d = 1y
2010
1d = 6.64y
1d/6.64 = 6.64y/6.64
0.15d = 1y
2008: US$0.12; 2010: US$0.15
Answer is choice A.
Ответ:
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