Three math problems, 1. A set of desk and chair is 135 yuan. The price of desk is 125% of the price of chair. How much are the desk and chair? 2. The dance team has 24 fewer people than the chorus team. 60% of the number of the chorus team is the same as that of the dance team. How many people are there in the dance team? 3. For a car, 7% of the price will be increased if it is purchased in installments. If it is purchased in cash, it will be delivered at a "95% discount". Xiao Ming finds that the installment payment is 7200 yuan more than the cash purchase. What is the original price of the car?
1. Chair 135 (1 + 125%) = 60 desk 135-60 = 75 answer: desk and chair are 75 yuan and 60 yuan respectively
2. Dance team 24 (1-60%) = 60 answers; dance team 60 people
7200 (1-95% + 7%) = 7200 △ 0.12 = 60000 a: the original price of the car is 60000 yuan
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