# Two trucks

Two trucks left cities A and B against each other and met after an hour. The first car came to B 27 minutes later than the second car to A. Calculate the car speed if the distance between cities A and B is 90 km.

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- quadratic equation
- equation
- system of equations
- expression of a variable from the formula
**basic functions**- reason

### Units of physical quantities:

#### Themes, topics:

### Grade of the word problem:

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