a photocopier enlarges by a ratio of 7:4.A picture measures 6cm by 4 cm.How many consecutive enlargements can be made so that the largest possible picture will fit on a sheet measuring 30 cm by 20 cm?
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a photocopier enlarges by a ratio of 7:4.A picture measures 6cm by 4 cm.How many consecutive enlargements can be made so that the largest possible picture will fit on a sheet measuring 30 cm by 20 cm?
材料：W:Well,can you confirm that we ordered nine boxes of paper for the photocopier?M:No,you ordered ten boxes of paper at $9 each .W:Ok,Here's the money.How much should the women pay?A.$72 B.$81 C.$90我觉得选C,可是答案给了A,
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