Question

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. Find the total distance travelled by the car.

Answer 1

HELLO DEAR
,



FOR THE FIRST Part OF JOURNEY,

Speed=40km/h and time=15min=1/4 hour

Using ,speed=distance/time

Distance=40 x 1/4=10km

For the second part of journey,

Speed=60km/h and time=15 min=1/4 hour

Then distance=60 x 1/4=15 km

Total distance travelled in whole journey=10+15=25 km


I HOPE ITS HELP YOU DEAR,
THANKS

Answer 2

Hey!

Note: v=velocity, t=time, s+distance

v1=40km/hr
t1=15m=1/4hr

v2=60km/hr
t2=15m= 1/4hr

Total distance (s)=?

s1=?
speed= distance/time
speed×time=distance
40×1/4
10=distance

s1=10km

______

s2=?
v=s×t
60×1/4=s
s=15km

Total distance = s1+s2=10+15=25km

Hope it helps...!!!