Rachit starts his journey to a certain place by car at 9 a.m. and reaches the place at 1 p.m. if he drives the car at a speed of 30 km/hr. By how much should he increase the speed so that he can reach the place by 12p.m.?
Answers
Answered by
7
Answer:
10 km/hr
Explanation:
s=d/t
30=d/4
d=120km
for reaching by 12 pm time taken is 3hrs
thus,
s=d/t
s=120/3
s=40 km/hr
thus he should increase his speed by
40 km/hr - 30 km/hr
10 km/hr
Answered by
6
Answer:
10 km/h
Explanation:
Time taken = 9 am to 1 pm = 4 hours
Speed = 30 km/h
Distance = Speed × Time
Distance = 30 × 4
Distance = 120 km
_____
If we need to reach @12 pm:
Time = 9 am to 12 pm = 3 hours
Distance = 120 km
Speed = distance/time
Speed = 120/3
Speed = 40 km/h
_____
Speed before = 30 km/h
Speed after = 40 km/h
Increase in speed = 40 - 30 = 10 km/h
Hope it Helps!!
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