Question

3.
A car is running at a speed of 54 km/hour. EXPIESS MIJ UL
An aeroplane covers a distance of 3120 km in 3 hours 15 minutes. Find the
speed of the aeroplane in m/minute.​

Answer 1

Answer:

Atfirst we need to convert 3 hours 20 minutes into minutes i.e. 3×60+20 = 200 minutes

Now simply use the formula of time and distance…

Distance = speed × time

Speed = 54 km per hour i.e. 54 km in 60 minutes

Or in 1 minute 54/ 60 ( as we converted the unit in minutes )

Time = 200 minutes

Now Distance =

54/60 × 200

= 9× 20 ( cancelled out a single zero from 60 and 200 and dividing 54 by 6)

= 180 km

Ans: It will cover 180 km in 3 hours and 20 minutes.

Step-by-step explanation:

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Answer 2

Given :-

• A car speed = 54km/hour
• An aeroplane cover 3120km in 3hour 15min

To find :-

• Speed of aeroplane in m/min

Solution :-

First we convert 3120km into metre

And 3hour and 15min convert into min

We get

3120km = 3120000m

3hour and 15min = 195min

As we know,

$Speed = \frac{distance}{time }$

Finding speed

$Speed = \frac{3120000}{195} \\Speed = 16000 \: \: \: \: \:$

The speed of an aeroplane 16000m/min

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