When you buy a car, you have to pay 10% more in installments. If you pay in cash, you can get a 95% discount. Uncle Lin calculates that there is a difference of 1800 yuan between the two methods. How much is the original price of the two cars The road repair team built a road, and 10 people built 800m in 10 days, which is exactly 1 / 9 of the road. According to this calculation, how many days will it take to complete the road

I answer the second, 800 divided by 1 / 9 equals 7200
10 divided by 1 / 9 is 90 days

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