Question

Subject : Math

Q.No-:Mr Ali took 2 hours to drive from Town A to
Town B. He took another 4 hours to drive to from
Town B to Town C. What was Mr Ali's average
speed for the whole journey?

Answer 1

See Explanation

Explanation:

Given

`T_1 = 2\ hours` ---------- A to B

`T_2 = 4\ hours` ---------- B to C

Required

Determine the average speed of Mr. Ali's journey

To do this, we have to calculate the total distance covered.

i.e.

Distance = Town A to B + Town B to C

`Total\ Time = T_1 + T_2`

`Total\ Time = 2 + 4`

`Total\ Time =6`

The distance between the towns are not given. So, I'll make an assumption.

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Assume:

Town A to B = 5km

Town B to C = 10km

`Total\ Distance = 5km + 10km`

`Total\ Distance = 15km`

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Average Speed is then calculated as:

`Average\ Speed = (Total\ Distance)/(Total\ Time)`

`Average\ Speed = (15)/(6)`

`Average\ Speed = 2.5km/hr`