1) Read the topic carefully, find out the equation, calculate the formula and work out the result.

2) Formula: distance = speed × time

Speed =? Distance? time

Time =? Distance? ÷? speed

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Question 1: Calculation time

The road from A to B is 436 kilometers long. Two cars came from two places. Car A travels 42 kilometers per hour and car B travels 46 kilometers per hour. Two hours after the A train leaves, the B train leaves. A few hours later, two cars met.

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Problem 1: Computing Time Analysis Solution

1) When two cars meet, it means that the total length of the two cars is equal to the total length of the road, but the length of the car body can be ignored.

2) A few hours later, two cars meet. From this sentence, we can know that the distance corresponding to the time to be calculated = total distance -2 hours driving distance.

3) Since both cars are running after 2 hours, the total speed = speed of A+speed of B..

4) Time can be calculated according to time = distance/speed.

5) Please see the screenshot for the detailed problem solving process.

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Question 2: Calculate the distance

The speed of an express train from Station A to bilibili is 65 kilometers per hour, and the speed of a slow train from bilibili to Station A is 60 kilometers per hour. When they met, the express train traveled more than the local train 10 km. What's the distance between Station A and bilibili?

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Problem 2: Computational Distance Analysis Solution

1) The express train is 65 kilometers per hour and the local train is 60 kilometers per hour, so the express train has to walk 5 kilometers more than the local train in an hour.

2) When we met, the express train traveled more than the local train 10 km, that is, 10 ÷ 5 = 2 hours.

3) Calculate the distance between the two places =? Speed × time

4) Please see the screenshot for the detailed problem solving process.

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Question 3: Calculation speed

The expressway between the two cities is 256 kilometers long. Two cars, A and B, start from two cities at the same time and go in opposite directions. Four hours later, they met. The speed of car A is 3 1 km, and the speed of car B is how many km?

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Problem 3: Calculation speed analysis solution

1) Total distance = 256km.

2) Total time = 4 hours

3) Total speed = 256? 4 = 64 kilometers

4) Please see the screenshot for the detailed problem solving process.

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