Question

A car travels 76 km in 47 minutes.
What is its average speed in km/h?
Give your answer rounded to 1 decimal place.

Answer 1

$\color{red}\huge{\underline{\underline{GIVEN\dag}}}$

• Speed of car-76 km/hr
• Time-47 min

$\color{red}\huge{\underline{\underline{SOLUTION\dag}}}$

We know that;

${ \color {blue} \boxed{average \: speed = \frac{total \: distance}{total \: time}}}$

We also know that;

$\color{blue}\boxed{speed = \frac{distance}{time}}$

$\implies 76 = \frac{distance}{47}$

$\implies distance = 76 \times 47$

$\therefore \boxed{total \: distance = 3572 \: km}...(1)$

From (1);

$\implies average \: speed = \frac{3572}{47}$

$\therefore \color{orange} \boxed{average \: speed = 76 \: kmph}$

HOPE THAT HELPS!!