Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion.

9.7 g + 67.8 mg

A.
The values can be added after making a conversion of units because they both measure mass.

B.
The values can be added without making a conversion of units because they both measure mass.

C.
The values cannot be added because one is measuring mass and the other is measuring capacity.

D.
The values cannot be added because one is measuring mass and the other is measuring volume.

Question

Can the values be added or subtracted? If one value needs to be converted to another, describe the conversion. 

9.7 g + 67.8 mg
 
 A.
The values can be added after making a conversion of units because they both measure mass.
 
 B.
The values can be added without making a conversion of units because they both measure mass.
 
 C.
The values cannot be added because one is measuring mass and the other is measuring capacity.
 
 D.
The values cannot be added because one is measuring mass and the other is measuring volume.

jdoe0001 · Answer

keep in mind that there are 1,000 milligrams in 1 gram

anonymous · Answer

anyone

jonnyvonny · Answer

^Exactly. Kilogram, milligram, centigram, whatever "gram" there is, it still is a object that has weight. Same thing applies for distance, volume, ect. For example, 1 foot and 5 inches are both for measuring distance. The only way you wouldn't be able to subtract mass is if it becomes negative; you can't have negative distance, or mass, in this case.

jonnyvonny · Answer

With this information, what answer do you think it is?