Namita travels 20 km 50 m every day. Out of this she travels 10 km 200 m by bus and the rest by auto. How much distance does she travel by auto?

Given:

Namita travels 20 km 50 m every day. Out of this, she travels 10 km 200 m by bus and the rest by auto.

To do:

We have to find the distance she travels by auto.

Solution:

We know that,

$1\ km=1000\ m$

Total distance travelled by Namita $= 20\ km\ 50\ m$

$=(20+\frac{50}{1000})\ km$

$=(20+0.05)\ km$

$= 20.05\ km$

Distance travelled by bus $= 10\ km\ 200\ m$

$=(10+\frac{200}{1000})\ km$

$=(10+0.2)\ km$

$= 10.2\ km$

Therefore,

Distance travelled by auto $=$ Total distance travelled $-$ Distance travelled by bus

$=20.05\ km-10.2\ km$

  $20.050$

$-10.200$

-------------

  $9.850$

-------------

Hence, Namita travels 9.850 km by auto.