Question

Question-an odometer change its reading from 720 km to 750 km when the car is moving at a speed of 60 km/h .how much time did the car take in minutes to change the reading?

Answer 1

Step-by-step explanation:

Speed = 60 km/hr.

Distance = 750 - 720

= 30 km

Time = ?

Time = distance

speed

= 30

60

= 1

2

= 0.5 hour

Convert to minute

1 hour = 60 min

BIG TO SMALL = MULTIPLY

BIG TO SMALL = MULTIPLY SMALL TO BIG = DIVIDE

= 0.5 × 60

= 30 minutes

So , it will take the car 30 minutes to change the reading

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Answer 2

Given,

An odometer changes its reading from 720 km to 750 km when the car is moving at a speed of 60 km/h.

To Find,

How much time did the car take in minutes to change the reading?

Solution,

We can solve the question as follows:

It is given that an odometer changes its reading from 720 km to 750 km when the car is moving at a speed of 60 km/h. We have to find the time taken in minutes to change the reading.

$Initial\: reading = 720\: km$

$Final\: reading = 750\: km$

$Speed = 60\: km/hr$

The formula for the distance traveled by an object moving at a uniform speed in a given time is:

$Distance = Speed*Time$

or,

$Time = \frac{Distance}{Speed}$

Now, the distance covered by the car will be equal to the initial reading subtracted from the final reading.

$Distance\: covered = 750 - 720 = 30\: km$

Substituting the values in the above formula,

$Time = \frac{30}{60} = 0.5\: hour$

Now, we will convert hours into minutes.

$1\: hour = 60\: minutes$

Therefore,

$0.5\: hour = 30\: minutes$

Hence, the time taken by the car is 30 minutes.