Time and Distance Practice Test 2 with solutions

Question : 13 of 40

Marks: +1, -0

A motor car starts with the speed of 70 km/hr with its speed increasing every two hours by 10 km/hr.
What is the time taken (in hours) in covering 345 km by it?

5 hrs.
$4 1/2$ hrs.
4 hrs 5 min.
4 hrs

Validate

Solution:

Distance travelled in 4 hrs = 70 × 2 + 80 × 2 = 300 km
Now, time taken to travel rest of 45 km =

{45}/{90}

1/2

hr
Hence, total time taken =

4 1/2

hrs.

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