Question

Q1.the distance between two cities A and B is 425km. if a car leaves A at 2 pm and reaches B at 10;30pm, what is tthe speed of the car?
Q2.in 8 minutes , rajan jogs 800 meters. what is his speed in km/h?
Q3. a car travels 60km in 45 minutes. findi its speed in km/h?
Q4 at 7am, lalit starts his journey from delhi on hos motarcycle to ambala, 285 km away. he drives at a speed of 30km/h. at the what time he reach his destination?


so plz i requst u to plz answer my qoutions its really urgent god swear plxz

Answer 1

time = covered time - previous time
10:30 - 2:00
=8.5 hours
speed = distance / time
=425/8.5
= 50 km/h
mark it as brainlist if it helps...

Answer 2

Answer:

1. Time taken by the car = 10 : 30 P.M. - 2 P.M.

                                           = 8 hours 30 minutes

                                           = 8.5 hours

Distance = 425 Km

$Speed = \frac{Distance}{Time}\\\\\implies Speed =\frac{425}{8.5}\\\\\implies Speed = 50\:\:Km/Hour$

2. Time = 8 minutes

Distance = 800 meter

Speed = 100 meter/minute

$\text{Now, Speed in Km/Hour = }\frac{100\times 60}{1000}=6\:\: Km/Hour$

3. Distance = 60 Km

Time = 45 minutes

         = 0.75 hours

Hence, Speed = 80 Km/Hour

4. Distance = 285 Km

Speed = 30 Km/Hour

Hence, Time = 9.5 Hours

So, if Lalit started at 7 A.M. then He will reach at = 7 A.M. + 9.5 hours

                                                                                     = 4 : 30 P.M.