Question

An aeroplane flies 200 km with a uniform speed of 300 km/h and then another 200 km with a uniform speed of 200 km/h. Calculate the average speed of the aeroplane.​

Answer 1

Answer :-

Average speed of the aeroplane is 240 km/h .

Explanation :-

We have :-

→ 1st distance (d₁) = 200 km

→ 1st speed (v₁) = 300 km/h

→ 2nd distance (d₂) = 200 km

→ 2nd speed (v₂) = 200 km/h

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Firstly, we have to calculate the time taken by the aeroplane to cover both the distances respectively .

Time taken (for 1st distance) :-

⇒ t₁ = d₁/v₁

⇒ t₁ = 200/300

⇒ t₁ = 2/3

⇒ t₁ ≈ 1.67 h

Time taken (for 2nd distance) :-

⇒ t₂ = d₂/v₂

⇒ t₂ = 200/200

⇒ t₂ = 1 h

Average speed of the aeroplane :-

= Total distance/Total time

= (d₁ + d₂)/(t₁ + t₂)

= (200 + 200)/(1 + 1.67)

= 400/1.67

≈ 240 km/h

Answer 2

Explanation:

given :

• aeroplane flies = 200 km

• speed = 300km

• aeroplane flies = 200km

• speed = 200 km/ h

to find :

• Calculate the average speed of the aeroplane.

solution:

• please check the attached file

• the answer is = 240

learn more :

• in this question we have the formula is = d/v

• we have to first find time and then,

• we will find the d and volume

• then we find last term d and t

• so we will find the answer will be you get