Question

Archi rides at 20 km/h to her office, which is 15 km away. How long will she take to reach the office? ​

Answer 1

Given Data:

                 speed=20km/hr

           distance  =15km

To Find:

          time=?

Solution:

∵$Speed=\frac{Distance}{Time}$

Let the Time take to reach the office be $'x'$

$\frac{20km}{3600sec}=\frac{15km}{x}$

∵1 hr=60min=3600 sec

$20x=15X3600\\20x=54000\\x=\frac{54000}{20} \\\\x=\frac{5400}{2} \\x=2700sec$

∵$\frac{3600sec}{60}=60min$

$x=\frac{2700}{60}\\\\x=45 min$

∴The time taken by Archi to reach the office is 45 minutes