Question

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60km/h for the next 15 minute the total distance covered by the car is???



please tell me the answer​

Answer 1

Given :

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60km/h for the next 15 minute.

To find :

Total distance covered by the car.

Solution :

In 1st condition :

Speed = 40 km/h

Time = 15 minutes = 15/60 = 0.25 h

∵ Distance = Speed × Time

⇒ Distance₁ = 40 × 0.25

⇒ Distance₁ = 10 km

Now in 2nd condition :

Speed = 60 km/h

Time = 15 minutes = 15/60 h = 0.25 h

Now using formula :

⇒ Distance₂ = 60 × 0.25

⇒ Distance₂ = 15 km

Now total distance :

⇒ Total distance = Distance₁ + Distance₂

⇒ Total distance = 10 + 15

⇒ Total distance = 25 km

∴ Total distance covered by car = 25 km.

Answer 2

Answer:

Given :-

• A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes.

To Find :-

• What is the total distance covered by the car.

Formula Used :-

✧ Distance = Speed × Time ✧

Solution :-

➲ In first case :

• Speed (s₁) = 40 km/h
• Time (t₁) = 15 minutes = 15/60 = 0.25 hours

According to the question by using the formula we get,

↦ Distance (d₁) = 40 × 0.25

↦ Distance (d₁) = 40 × 25/100

↦ Distance (d₁) = 4 × 25/10

↦ Distance (d₁) = 4 × 5/2

↦ Distance (d₁) = 20/2

➠ Distance (d₁) = 10 km

➲ In second case :

• Speed (s₂) = 60 km/h
• Time (t₂) = 15 minutes = 15/60 = 0.25 hours

According to the question by using the formula we get,

↦ Distance (d₂) = 60 × 0.25

↦ Distance (d₂) = 60 × 25/100

↦ Distance (d₂) = 6 × 25/10

↦ Distance (d₂) = 6 × 5/2

↦ Distance (d₂) = 30/2

➠ Distance (d₂) = 15 km

Now, we have to find the total distance covered by the car,

Given :

• d₁ = 10 km
• d₂ = 15 km

According to the question,

⇒ Total distance covered = d₁ + d₂

⇒ Total distance covered = 10 km + 15 km

➦ Total distance covered = 25 km

∴ The total distance covered by the car is 25 km .