Subtract 778 m 78 cm from 2 km 768 cm1228-9 m571-1 m1221-988 m189-22 m

Question

Toppr Admin · Accepted Answer

First we have to convert both the quantities in m1-xA0-xA0-m-100-xA0-xA0-cm-x21D2-1-xA0-xA0-cm-01-xA0-m778-xA0-xA0-m-xA0-xA0-78-xA0-xA0-cm-778-01-xD7-78-778-78-xA0-xA0-m1-xA0-xA0-km-1000-xA0-xA0-m2-xA0-xA0-km-xA0-xA0-768-xA0-xA0-cm-2-xD7-1000-01-xD7-768-2007-68-xA0-xA0-mNow subtracting both-xA0-2007-86-x2212-778-8-1128-9-xA0-xA0-mOption A is correct-

Subtract $778 m 78 c m$ from $2 k m 768 c m$
$1228.9 m$
$571.1 m$
$1221.988 m$
$189.22 m$

First we have to convert both the quantities in $m$
$1 m = 100 c m$
$\Rightarrow 1 c m = .01 m$
$778 m 78 c m = 778 + .01 \times 78 = 778.78 m$
$1 k m = 1000 m$
$2 k m 768 c m = 2 \times 1000 + .01 \times 768 = 2007.68 m$
Now subtracting both
$2007.86 - 778.8 = 1128.9 m$
Option $A$ is correct.

Subtract 778 m 78 cm from 2 km 768 cm1228.9 m571.1 m1221.988 m189.22 m

First we have to convert both the quantities in m1 m=100 cm⇒1 cm=.01 m778 m 78 cm=778+.01×78=778.78 m1 km=1000 m2 km 768 cm=2×1000+.01×768=2007.68 mNow subtracting both 2007.86−778.8=1128.9 mOption A is correct.

Subtract $778 m 78 c m$ from $2 k m 768 c m$
$1228.9 m$
$571.1 m$
$1221.988 m$
$189.22 m$

First we have to convert both the quantities in $m$
$1 m = 100 c m$
$\Rightarrow 1 c m = .01 m$
$778 m 78 c m = 778 + .01 \times 78 = 778.78 m$
$1 k m = 1000 m$
$2 k m 768 c m = 2 \times 1000 + .01 \times 768 = 2007.68 m$
Now subtracting both
$2007.86 - 778.8 = 1128.9 m$
Option $A$ is correct.