Question

A car travels 240 km in $3\frac{3}{4}$ hours.

Calculate the average speed of the car.

Answer 1

Answer:

d = 240 km

t = 15/4

s =d/t

s = 240×4÷15

s = 64 km/h

Answer 2

Step-by-step explanation:

Distance = 240 km & time =3 , 3/4 hrs = 15/4

Speed = Distance/ time

= 240 / 15 / 4

= 240×4 /15

= 64 km / hr

Let time as x and speed as y.

Average speed =

$\frac{2xy}{x + y} km \: per \: hour$

$\frac{2 \times \frac{15}{4} \times 64 }{ \frac{15}{4 } + 64} = \frac{}{?}$

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