Question

10.A car moves with a speed of 42km/h for 20 minutes and then with a speed of 60 km/h for next 30 min . the total distance covered by the car is:Required to answer.Single choice.



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Answer 1

Explanation:

According to the question

Let D1 be the distance covered by car in 20 minutes

We know that,

D1 = speed x Time

Speed = 42km/h

Time (In hours) = 20/60 = 1/3hours

D1 =

$42 \times \frac{1}{3} = 14$

Now,

Let D2 be the distance covered by car in 30 minutes

D2 = speed x Time

Speed = 60km/h

Time (In hours) = 30/60 = 1/2

D2 =

$60 \times \frac{1}{2} = 30$

D2 = 30

Total Distance Covered by Car = D1 + D2

= 14 + 30

= 44km

Hence, total distance covered by Car is 44km