200 application questions in the first year of junior high school, and one application question in t

1. In the fundraising activity of "Giving Love to the Disaster Area" held by the school, the first class of junior high school and the second class of junior high school donated a total of 492 yuan. It is known that the average donation per person in Class 1 is 5 yuan, the average donation per person in Class 2 is 6 yuan, and there are 6 more students in Class 1 than Class 2 in junior high school.

2. The 2,000 yuan scholarship will be awarded to 25 good students in the school, including 200 yuan for each of the three good students at the municipal level and 50 yuan for each of the three good students at the school level.

3. After the Wenchuan Da**, people from all over the world have donated money and materials to support the disaster area A company in our city donated a total of 600 tents worth 940,000 yuan to the disaster area A and B two kinds of tents are known to be 1700 yuan each, and B tents are 1300 yuan each.

4. Xiao Ming has to rush to the experimental junior high school 1000 meters away from his home every morning One day, Xiao Ming set off from home at a speed of 80 meters, and 5 minutes later, Xiao Ming's father found that he forgot to bring his language papers, so his father immediately rode a motorcycle at a speed of 180 meters to chase Xiao Ming, can Dad catch up with him on the way?

5. A rides a bicycle from A to B, and B rides a bicycle from B to A, both of them move at a constant speed It is known that the two people set off at the same time at 8 a.m., and by 10 a.m., the two were 36 kilometers apart, and by 12 noon, they were 36 kilometers apart to find the distance between A and B

6. The basic electricity consumption of residents in a city is per kilowatt-hour, and if the monthly electricity consumption exceeds a kilowatt-hour, the excess part will be charged at 70% of the basic electricity ad valorem.

A household used 84 kWh of electricity in May, paid a total of electricity bills, and found the value of a.

If the average electricity bill of the household in June is RMB, how many kWh of electricity will be shared in June? How much should I pay for electricity?

7. Xiao Ming and Xiao Gang are traveling in the same direction from the two places at the same time, the two places are 26km apart, Xiao Ming walks 7km per hour, Xiao Gang walks 6km per hour, if Xiao Ming takes a dog and sets off at the same time as him, the dog runs in the direction of Xiao Gang at a speed of 10km per hour, and immediately turns back and runs to Xiao Ming after meeting Xiao Ming, and then immediately turns back and runs to Xiao Gang after meeting Xiao Ming, so back and forth until the two meet, ask: How many hours do two people meet?

How many kilometers did this dog run?

Set the list price x

So the purchase price is.

x = 200 set cost y

y=120A: The list price is 200 yuan, and the purchase price is 120 yuan.

Solution: Set the price of each garment as X yuan;

then x=200, then the cost of each piece of clothing is 120

The list price is $x.

5 discount loss of 20 yuan, 8 discount of 40 yuan.

So the purchase price is.

x=200A: The list price is 200 yuan, and the purchase price is 120 yuan.

Set up color TVs x 10,000 units, refrigerators 3 2x 10,000 units, mobile phones (10,000 units * means multiply.

1500x+

Figure it out yourself.

5 billion * 13 = ** subsidy.

Hope it helps!