Question

a girl while riding a bicycle move with a speed of 10 km/h 2 hour and with speed 15km/h for next 3 hour find the total distance moved by her
and find average speed

Answer 1

Hii..
Here is your answer..

Solution:-
Speed(S1)=10km/h
Time(T1) =2 hours
Since,
$speed = \frac{distance}{time } \\ = > distance = speed \times time$
So,
Distance(D1)=(S1)×(T1)
$= > 10 \times 2 \\ = > 20$
First distance=20km

Now,
Speed2=15km/h
Time 2=3hours

So,
Distance 2=15×3
=>45km

Therefore,
Total distance travelled by her=
$= > 20 + 45 \\ = > 65km$
Total time=2 h+3h=5 hours
And,
$average \: speed = \frac{total \: distance}{total \: time}$
$= > \frac{65}{5} \\ = > 13$
Hence,
average speed=13km/h

Hope it helps uh...✌️✌️✌️