Question

300kgss of salt solution has 40% salt in it. how much salt should be added to make it 50% in the solution?

Answer 1

60 kg is the answer because:
Then, quantity of salt =4×300÷100=120 kg
Now, by the condition in the question,
120+x by 300+x=50 by 100
=120+x by 300+x=1 by 2
= 240 + 2x = 300 + x
Therefore, x = 60 g