a solution contains 40 grams of common salt in 320 grams of water calculate the concentration in terms of mass by mass percentage of the solution

a solution contains 40 grams of common salt in 320 grams of water calc

1.	a solution contains 40 grams of common salt in 320 grams of water calculate the concentration in terms of mass by mass percentage of the solution
Answer» $= \frac{40}{320 + 40} = \frac{40}{360} \\ \% = \frac{40}{360} \times 100 = \frac{4000}{360} \\ = 11.11\% \: \: or \frac{100}{9} \%$ ALRIGHT please MARK as BRAINIEST answer. I HOPE it will help you.