Question

a car moves for half of it's time at 80kmph and for rest time at 40kmph. Total distance covered is 60 km what is average speed of car​

Answer 1

Answer:

Explanation:

Correct Question :-

A car moves for half of its time at 80 km/h and for rest half of time at 40 km/h total distance covered is 60 km what is the average speed of the car ?

Answer :-

Given :-

Car moves half of its time 80 km/h and rest time at 40 km/h.

Total distance covered = 60 km

Formula to be used :-

Average speed = Total distance covered/Total time taken

Solution :-

Let the time taken be t hours.

And distance as D1 and D2

⇒ 80 × t/2 = d1

⇒  40t = D1

Rest distance,

⇒ 40 × t /2 = D2

⇒  20t = D2

Average speed = (40t + 20t)/t

Average speed = 60t/t

Average speed = 60 km/h

Hence, the average speed of car​ is 60 km/h.

Answer 2

⭐Brainly Quality Answers⭐

$\huge{\red{\underline {\underline {Question:-}}}}$

A car moves for half of it's time at 80kmph and for rest time at 40kmph. Total distance covered is 60 km what is average speed of car.

$\huge{\purple{\boxed {\boxed {Answer :-}}}}$

☑ The average speed of car is 60 km / hrs.

$\huge{\green{\underline {\underline {Solution:-}}}}$

Let the time taken be 't' hours.

=> average speed= total distance covered/total time taken

distance covered with 80km/h speed.

$= > d1 = \frac{80 \times t}{2}$

$= > d1 = 40t$

Distance covered with 40 km/h speed

$= > d2 = \frac{40 \times t}{2}$

$= > d2 = 20t$

=> Average speed of car= (40t+ 20t)/t

⭐ So, The average speed is 60

km/h

__________________________

$\huge{\orange{\underline {\underline {Formula}}}}$ $\huge{\pink{\underline {\underline {Used:-}}}}$

⭐ Average speed= Total distance covered/Total time taken

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