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Xiaogang and Xiaoqiang start from the same point at the same time and jog in the opposite direction along the 400 meter circular track. Xiaogang runs 95 meters per minute and Xiaoqiang runs 105 meters per minute?
400 (95 + 105) = 400 (95 + 105) = 200 = 2 (minutes) a: two people meet for the first time in 2 minutes
Primary school mathematics fifth grade mathematics equation
1. Xiaoya bought two notebooks and five ballpoint pens, which cost 15.6 yuan. Each ballpoint pen costs 1.6 yuan. How much is each notebook?
2. Students clean up. There are 12 people sweeping the floor. If we add another 5 people to clean the windows, then the number of people cleaning the windows is twice as many as the number of people sweeping the floor. How many people are cleaning the windows?
3. Under the same lighting level, the power consumption of an ordinary light bulb is 100 watts per hour, which is 10 watts more than that of an energy-saving lamp six times. According to this calculation, what is the power consumption of this energy-saving lamp per hour?
There's Tao solving the equation!
X+8.4=4.5X
1. Let each notebook be x, and the equation is 2 * x + 5 * 1.6 = 15.62. Let the window cleaner be x, and the equation is x + 5 = 2 * 12.3. Let the hourly power consumption of this energy-saving lamp be x Watt, and the equation is 6 * x + 10 = 100.4. There is also a solution to the equation! X + 8.4 = 4.5X. Subtract one number from both sides of the equation, and the equation still holds
The price of a table tennis racket is 19 yuan more expensive than that of a badminton racket. The price of a table tennis racket is 1.5 times that of a badminton racket. What are the unit prices of a table tennis racket and a badminton racket
Set the badminton racket X Yuan
1.5x-x=19
0.5x=19
x=19÷0.5
x=38
38 × 1.5 = 57 yuan
Badminton 38 yuan table tennis racket 57 yuan
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