Question

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

Answer 1

Answer:

63 and 70 km/hr

Step-by-step explanation:

let speed of cars be x and x+7

distance travelled by them in 2 hours = 2x and 2(x+7)

now acc to questions

2x +2(x+7)+34=300

4x+14+34=300

4x+48=300

x+12=75

x=63 and x+7=70

Answer 2

☆ Solution ☆

Given :-

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

To Find :-

• The speed of the cars.

Step-by-Step-Explaination :-

Let the speed of car A be x km/hr

And the speed of car B be x + 7 km/hr

Now,

Distance covered by car A after 2 hours = 2x

Distance covered by car B after 2 hours = 2 ( x + 7 )

According to the question :-

=> 2x + 2$\times$ ( x + 7 ) + 34 = 300

=> 2x + 2x + 14 + 34 = 300

=> 4x + 48 = 300

=> 4x = 300 - 48

=> 4x = 252

=> x = $\frac{252}{4}$

=> x = 63

Hence,

The speed of car A is 63 km/hr.

And the speed of car B is ( 63 + 7 ) = 70 km/hr.