Question

Pehal and Ishaan were making 100g of sugar solution's with concentration by mass 20percent and 50 percent respectively . Pehal added 20g of sugar in her solution whereas Ishaan evaporated 20g of water from his solution.Now the two solutions were mixed to form a final solution.The concentration by mass of final solution is
1.28 percent
2.45 percent
3.40 percent
4.60 percent

Answer 1

The ans of your que is 45%

Answer 2

The answer is 45 per cent.
Hope it will help you.