Question

Tashi travels a total of 18 km in 45 minutes. if he covers half the distance in 2/3 of the time, what speed was maintained to cover the remaining distance in the remaining time?
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Answer 1

Step-by-step explanation:

Tashi needs to cover 6km in 45 min

Given that he covers one half of the distance in 2/3 of the total time

she covers half of 6 km in 2/3 of 45 min.

=3-30

=she covers 3km in 30

now,she need to cover the remaining

=distance =3km

time=1

15min =14hrs

Required speed

=3-12km/h

Answer 2

Total D = 18

Total T = 45min=

$\frac{45}{60}hrs$

$= \frac{3}{4} hrs$

So Avg Speed =

$\frac{18}{ \frac{3}{4} } \\ = \\ 24$

given that half distance in 2/3 rd time

so 9km in 1/2 hrs (3/4 x 2/3)

therefore speed in this time =

$\frac{9}{ \frac{1}{2} } \\ = \\ 18$

and now

remaining = 18-9= 9

and t=1/2

therefore rest speed also 18 km/h

so required answer is 18kmph

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