A motor bike starts at the speed of 60 kmph with is speeding increasing by 12
Answers
Answered by
0
Answer:
Initial speed of motor = 70 kmph.
Distance covered in first 2 hours = 2 × 70 = 140 kms.
For next two hours speed of motor = 80 kmph.
∴ Distance covered in next 2 hours = 2 × 80 = 160 kms.
Distance covered in first 4 hours = 140 + 160 = 300
Remaining distance = 345 - 300
= 45 km
This distance will be covered at the speed of 90 kmph.
∴ Time taken = 4590 = 12hour
∴ Total time taken
= 4+12 = 412hours
Answered by
0
Answer:
7 hour
Step-by-step explanation:
First 3hour: 180 km covered (60*2)
second 3hour: 216km covered (72*3)
=(60+12=72)
Total distance: 396
After this, the speed becomes 84 km/h so distance in hour= 84(72+12)
Total distances (current) : 396+84=480
Total time= ( first 3 hours) + ( second 3 hours)
+(extra hour when it changed to 84kmph)
=3+3+1=7
hope it will help you ❤️
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