7. The distance between places A and B is 525 kilometers. A car leaves place A heading towards place B and drives at a speed of 82 kilometers per hour. At the same time, a truck leaves place A heading towards place B and drives at a speed of 63 kilometers per hour. What will be the distance between the car and the truck after 6 hours of driving? How many more kilometers will the car have to travel, and how many more kilometers will the truck have to travel, from that moment to reach place B?
First method:
In 6 hours, the car will travel $6 \cdot 82 \mathrm{~km}=492 \mathrm{~km}$, ..... 2 POINTS
and the truck $6 \cdot 63 \mathrm{~km}=378 \mathrm{~km}$. ..... 2 POINTS
The distance between the car and the truck will be $492 \mathrm{~km}-378 \mathrm{~km}=114 \mathrm{~km}$. ..... 2 POINTS
The car has $525 \mathrm{~km}-492 \mathrm{~km}=33 \mathrm{~km}$ left to travel, ..... 2 POINTS
and the truck has $525 \mathrm{~km}-378 \mathrm{~km}=147 \mathrm{~km}$ left to travel. ..... 2 POINTS
TOTAL 10 POINTS