Question

The distance between two towns is 300 km. Two cars start simultaneously from the
towns and move towards each other. The speed of one car is more than the other by
7km/hr. If the distance between the cars after 2 hours is 34 km, find the speed of
the cars.
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Answer 1

Answer:

63 km and 70 km are the speed of 2 cars.

Step-by-step explanation:

To find :

• the speed of the cars

We know that :

Distance between 2 towns = 300km

Let us assume:

• speed of car A= x
• speed of car B= x + 7

After 2 hrs :

• distance travelled by car-A = 2x km

• distance travelled by car-B = 2(x + 7) km = 2x + 14

• distance between the two cars = 300 -2x -(2x+14) = 34 km

According to question :

                          2x + 2x +14 + 34 =300            

                                 4x + 48 =300

                                   4x =300-48

                                     4x =252                                

                                      x = 252/4

                                      x = 63

Now, to find out the speed:

• speed of car A= x = 63 km
• speed of car B= x + 7 = 63 +7 =70 km