Question

A car travells 50km in 30minutes then 15 km in 15 minutes and 35km in 45minutes what is its average speed​

Answer 1

$\huge{\underline{\underline{\underline{\sf{\pink{ﾑɳรᏇɛƦ࿐}}}}}}$

total time taken

=30+45+15=90min. average speed

=100/90 km per min.

Answer 2

Given:

• A car travels 50 km in 30 minutes.
• It then travels 15 km in 15 minutes and,
• 35 km in 45 minutes.

$\:$

To find:

• Average speed of the car.

$\:$

Solution:

☆ Average speed is defined as the total distance covered in total time taken.

$\boxed {\mathfrak {\pink {Average\ speed = \dfrac {Total\ distance}{Total\ time}}}}$

Total distance = (50+15+35) km = 100 km

Total time = (30+15+45) mins = 90 mins = 1.5 hrs

$\sf {Average\ speed = \dfrac {100}{1.5}}$

Average speed = 66.6 km/h

$\:$

Average speed:

Average speed of the car is $\underline {\sf {\red {66.6\ km/h}}}$