There should be something wrong with math ~

1 question 5.8 times 1.05 equals 6.09.

The price of 80 hard copies is equivalent to the price of 240 soft copies, so the total * * * is equivalent to buying 240+60=300 soft copies, and the price of a soft copy is 720 divided by 300, which is equal to 2.4 yuan. Give points!

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I would like to ask how Harbin Peng Hong took the postgraduate entrance examination.

Analogical thinking

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High school Chinese teaching design courseware [5]