What percent is 400 gm of 1 kg?  Choose the correct choice from the following options:
A) 25% B) 40% C) 10% D) 8% E) 12%
1 kg = 1000 gm   400/1000 Ã— 100 = 40000/1000= 
<gadget id="calculator">40000/1000</gadget>
<output>40</output>
40 %   Answer is 40%
<result>B</result>
What percent is 400 gm of 1 kg?