Question

Sakar moves with the speed of 80 kilometre per hour for 15 minutes and then which speed of 60 km per hour for next 15 minutes the total distance covered by the car is

Answer 1

Answer:

$35000m \: or \: 35km$

Explanation:

Let:

Distance= S

Speed= V

Time= T

Now:

V1= 80kmph= (80×5÷18) mps= 200/9 mps

V2= 60kmph= (60×5÷18) mps= 50/3 mps

T1=T2= 15minutes= 15×60= 900seconds

S1=? S2=?

S= V×T

Solution:

$s1 = \frac{200}{9} \times 900 = 200 \times 100 = 20000$

$s2 = \frac{50}{3} \times 900 = 50 \times 300 = 15000$

Total Distance= S1+S2

$20000 + 15000 = 35000m$

To convert it in km, divide it by 1000.

$\frac{35000}{1000 } = 35km$

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