Question

sujata drives her car at a constant speed if she travels 25 km in 30 minutes how long will she take to travel 120 km​

Answer 1

Answer:

two and two /five hours

Step-by-step explanation:

Speed =Distance /time

=25/1/2

= 25*2. 30 minutes =1/2hour

= 50 km/h

time =distance /speed

= 120/50

= 12/5

=2 2/5 hour

Answer 2

Given:

The distance traveled by Sujata = 25km

The time taken to travel the distance = 30 minutes

To Find:

The time taken by Sujata to travel 120 km

Solution:

The speed of the car = The distance traveled / The time taken

= 25 X 1000 / 30 X 60          (Substituting data in SI units)

(We know that 1 km = 1000m and 1 minute = 60 seconds)

= 250 / 18 ms⁻¹

It is given that Sujata is driving at a constant speed

⇒ The time taken by her to travel 120 km = t = distance / speed

= $\frac{12X1000}{\frac{250}{18} }$

or t = 12 X 100 X 18 / 25 seconds

Dividing by 60 to convert it into minutes,

t = 12 X 4 X 18 / 60

t = 864 / 60

= 14.4 minutes

Hence, Sujata drives for 14.4 minutes to travel 120 km​.