Question

a car is travelling at the average speed of 60 km how much distance will it travel in 1 hour 20 minutes​

Answer 1

Given :

• Speed = 60 km per hour
• Time = 1 hour 20 minutes

To Find :

• Distance = ?

Solution :

We are given :

Time = 1 hour 12 minutes

We know that :

1 hour = 60 minutes

$\sf : \implies 1 minute = \dfrac{1}{60} \: hours$

$\sf : \implies 1\: hour \: 60 \: minutes = 1 + \dfrac{12}{60} \: hours$

$\sf : \implies 1\: hour \: 60 \: minutes = 1 + \cancel{\dfrac{12}{60}} \: hours$

$\sf : \implies 1\: hour \: 60 \: minutes = 1 + \dfrac{1}{5} \: hours$

$\sf : \implies 1\: hour \: 60 \: minutes = \dfrac{5}{5} + \dfrac{1}{5} \: hours$

$\sf : \implies 1\: hour \: 60 \: minutes = \dfrac{5+1}{5} \: hours$

$\sf : \implies 1\: hour \: 60 \: minutes = \dfrac{6}{5} \: hours$

Now, we know that :

$\underline{\boxed{\bf Distance = speed \times time}}$

We have :

• $\sf Time = \dfrac{6}{5} \: hours$

• Speed = 60 km/hour

By filling values :

$\sf : \implies Distance = 60 \: km/hour \times \dfrac{6}{5} \: hours$

$\sf : \implies Distance = \cancel{60} \: km \times \dfrac{6}{\cancel{5}}$

$\sf : \implies Distance = 12 \: km \times 6$

$\sf : \implies Distance = 72\: km$

$\underline{\boxed{\bf Distance = 72\: km}}$

Hence, The car will cover the distance of 72 km.