Question

after 25 kg of water has been evaporated from a solution of salt and water, which had 20% salt, the remaining solution has 30% salt. Find the weight of the original solution.

Answer 1

Answer:

the weight of the original solution is 75kg

Step-by-step explanation:

let x be the original solution

wt of salt =$\frac{20x}{100}$

after evaporation , the new wt of solution = x-25

wt of salt =$\frac{30(x-25)}{100}$

now equate the wt of salt =$\frac{20x}{100} =\frac{30(x-25)}{100}$

                                 20x =30x -750

                          10x =750

                             x=75kg

if it helps u click on THANKS❤️