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The distance between a and B is 36 kilometers. Xiao Ming rides a bicycle from a brother to B Di, and Xiao Li rides a bicycle from B to a di They set out at the same time and walk in opposite directions. After an hour, they meet. After another 0.5 hours, Xiaoming's remaining distance is twice that of Xiaoli's. what are the speed of Xiaoming and Xiaoli's cycling? Use the equation to solve the problem
Let Xiaoming speed be x km / h, Xiaoli speed be 36-x km / h, 36 - (1 + 0.5) x = 2 [36 - (1 + 0.5) (36-x)] 36-1.5x = 2 (36-54 + 1.5x) 36-1.5x = 2 (1.5x-18) 36-1.5x = 3x-364.5x = 72x = 1636-x = 36-16 = 20 a: Xiaoming speed is 16 km / h, Xiaoli speed is 20
Do not know the scale and the actual distance, known distance on the map, how to calculate the scale
There's something wrong with your question, distance on the graph
Scale = ---, you see, this only knows the distance of the graph, can you find the scale
Actual distance
On a 4:1 scale drawing, the length of the measured part is 20 cm. What is the actual length of the part?
4：1=20：x
4x=20
x=5
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