If 500 gm of salt solution has 30% salt in it, how much salt must be added to make the concentration of salt 50% in the solution?
A.200 gm
B.100 gm
C.90 gm
D.50 gm
Answer:A
If 500 gm of salt solution has 30% salt in it, how much salt must be added to make the concentration of salt 50% in the solution?
A.200 gm B.100 gm C.90 gm D.50 gm