Question

What should be the average speed of a car to cover a distance of 189 km in 3.5 hours?

A) 15 m/s B) 54 m/s C) 27 m/s D) 30 m/s

Answer 1

$\Huge\mathcal\red{Answer !}$

(a) 15 m/s

Answer 2

$\huge\mathfrak{ \blue{ \underline{ \overline{Answer}}}}$

$\small\mathcal \green{A \ car \ moves =189 \: km \: in \: 3.5 \: hours}$

$\small\mathcal \pink{Speed \: of \: car \: in \: km/hr= \frac{189}{3.5} = 54 \: km/hr}$

$\small\mathcal \green{Speed \: of \: car \: in \: m/s=54 \times \frac{5}{18}}$

$\small\mathcal \pink{3 \times 5 = 15 \:}$

$\small \mathcal \green{= > 15m \:/ sec}$

Therefore answer= A (15m/s)