J.R. S. answered 02/01/21
Ph.D. University Professor with 10+ years Tutoring Experience
Assuming the 21.2% sugar is % by mass, we can perform the following calculations:
21.2% x = 26.5 g
0.212x = 26.5 g
x = 125 g solution
Check your answer:
21.2% means 21.2 g sugar per 100 g of solution
125 g solution x 21.2 g sugar / 100 g solution = 26.5 g sugar (CHECK)