Question

A car moves with a speed of 40 km per hour for 15 minutes and then with a speed of 60 km per hour for the next 15 minutes the total distance covered by the car is ​

Answer 1

Answer:

25 km

Explanation:

Speed, S  

1

​

 is 40 km/hr

Speed, S  

2

​

 is 60 km/hr

Time, T  

1

​

 is 15 minutes =  

4

1

​

 hr

Time, T  

2

​

 is 15 minutes =  

4

1

​

 hr

Using S  

1

​

 and T  

1

​

 in the equation:

Distance = Speed ×Time

D  

1

​

=S  

1

​

×T  

1

​

 

  =40×  

4

1

​

 

  =10 kms

Using S  

2

​

 and T  

2

​

 in the equation:  

Distance = Speed × Time

D  

2

​

=S  

2

​

×T  

2

​

 

   =60×  

4

1

​

 

   =15 kms

Total kms covered =D1+D2=10+15=25 kms.

Answer 2

+Answer :

90 km

Explanation:

40 km + 60 km