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A museum opened at 8:00am.In the first hour 350 people purchased admission tickets.In the second hour 20% more people purchased admission tickets than in the first hour.Each admission ticket cost 17.50. What was the total amount of money paid for all the tickets purchased in the first two hours?

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Skøll1922
Money for the first hour: 350×17.5=6125
Ticket sold in the second hours:
320+(320×20)/100=384
Money for the second hour: 384×17.5=6720
Total money: 6125+6720=12845

Hope this helped.
Amount collected at the first hour = 350 x $17.50 = $6125

In the second hour, there were 20% more people:
20% of 350 = 0.2 x 350 = 70
Number of people = 350 + 70 = 420

Amount collected at the second hour = 420 x $17.50 = $7350

Total = $6125 + $7350 = $13475

Answer:  $13475