Question

Question: 10. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is: (i) 100 km (ii) 25 km (iii) 15 km (iv) 10 km​

Answer 1

Answer:

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

Distance covered = speed × Time taken

60 minutes = 1 hour

15 minutes = 6015 hour

Distance covered = 240×6015=10km

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

Distance covered = 60×6015=15km

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

∴ 25 km is correct

Explanation:

plz make me as brainlist

Answer 2

Answer:

Explanation:

• In the first part speed = 40kmph
• time =15 min,   convert it to hrs time = 15/60 hrs=1/4 hrs

distance=speed * time =40*1/4=10km

• in the second part speed = 60kmph
• time = 15 min=15/60 hrs=1/4 hrs

distance covered =60*1/4=15 kms

total distance covered = 10+15= 25 kms