A car travels for 11 hours. For the first 100 km, the car travels with a certain speed, and then it increases its speed by 15 km/h to cover the remaining 280 km. The time (in hours) it takes to travel the 100 km part is:

A car travels for 11 hours. For the first 100 km, the car travels with

1.	A car travels for 11 hours. For the first 100 km, the car travels with a certain speed, and then it increases its speed by 15 km/h to cover the remaining 280 km. The time (in hours) it takes to travel the 100 km part is:
A.	4
B.	7
C.	10
D.	11
Answer» B. 7

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A car travels for 11 hours. For the first 100 km, the car travels with a certain speed, and then it increases its speed by 15 km/h to cover the remaining 280 km. The time (in hours) it takes to travel the 100 km part is:

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