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Morotarosalliego
Answered

3. A car covers a distance in 30 minutes with an average speed of
50 km per hour. What must be the average speed by the car to
cover the same distance in 60 minutes?
A 10
B. 12
D.25
C. 20
​

Sagot :

Charliedejesusuntalago

Answer:

Letter: A

Step-by-step explanation:

the correct answer

Chupapi123go

Answer:

c is the rigth answer

Step-by-step explanation:

In the first case,

time= 30min=30/60hrs=1/2hr.

Speed=60km/hr.

Therefore, distance=speed×time=60×1/2=30km.

In the second case,

distance is same=30km.

Time= 20 minutes=20/60hr=1/3hr.

Now,speed=distance/time=30/(1/3)=30×3=90km/hr.

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