From the city A and B left at the same time towards each other a taxi and a bus. The taxi speed is 80 km / h, and the bus speed is 15 km / h less. After 2 hours the distance between them became 120 km. A taxi every 10 km will have 3 liters of gasoline. How many liters of gasoline did the taxi spend on the entire route A and B?
Since the speed of the bus is 15 km / h less, then it is equal to:
80 – 15 = 65 km / h.
Since the bus and the taxi were moving towards each other, the speed of their approach is equal to the sum of their speeds:
80 + 65 = 145 km / h.
Then in 2 hours they became close to:
145 * 2 = 290 km.
The distance between A and B will be:
120 + 290 = 410 km.
The amount of gasoline spent by the taxi is equal to:
410/10 * 3 = 123 liters.
Answer: the required amount of gasoline is 123 liters.
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