How can i calculate the percent concentration of solution?

m solute= 15g
m solution =100g

You should calculate in this way

m solute= 15g

m solution = 100g

C%= m solute/m solution  *100%

C% = 15/100 *100 = 15%

C%= 15%

You should calculate in this way

m solute= 15g

m solution = 100g

C%= m solute/m solution  *100%

C% = 15/100 *100 = 15%

C%= 15%

you must divide the mass of the solute by the mass of the solution and then multiply by 100

15/100=0.15

0.15 x 100 = 15%

you must divide the mass of the solute by the mass of the solution and then multiply by 100

15/100=0.15

0.15 x 100 = 15%