Question

Q. A car moves with speed of 80 km/hr for 15 minutes and then with a speed of 60 km/hr
for the next 15 minutes. The total distance covered by the car is --
a) 100 km
b) 50 km
d) 70 km
c) 35 km​

Answer 1

Answer:

Step-by-step explanation:

ANSWER

Speed of car in first 15 minutes = 40 km/h

Distance covered = speed × Time taken

60 minutes = 1 hour

15 minutes =

60

15

​

hour

Distance covered = 240×

60

15

​

=10km

Speed of car in next 15 minutes = 60 km/h

Distance covered = 60×

60

15

​

=15km

∴ Total distance covered = (10+15)km = 25 km

∴ 25 km is correct

I HOPE IT HELPS YOU

Answer 2

Answer:

35 kilometres

Step-by-step explanation:

Given :

• Speed with which the car travels first 15 minutes = 80 km/hr

• Speed with which the car travels for the next 15 minutes = 60 km/hr

To find :

• Total distance covered by the cat

Formula :

Distance = speed × time

Distance travelled in the first interval = 80×¼ = 20 km

Distance travelled in the second interval = 60×¼ = 15 km

Total distance covered = distance covered in the first interval + distance travelled in the second interval

Total distance covered = 20+15

Total distance covered = 35 km

The total distance covered by the car is equal to 35 kilometres