# Timetable 20313

The train ran the distance between stations at a speed of 90km/h in 4 hours. What speed can it take if, according to the new timetable, the journey takes an hour longer?

## Correct answer:

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

**algebra**- expression of a variable from the formula
**basic functions**- reason
- direct relationship
- simple proportion

### Units of physical quantities:

#### Themes, topics:

### Grade of the word problem:

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