Question

Ms. Maryna has 10 lbs of 25% sugar syrup. How much sugar does she need to add to make 40% sugar syrup?

Answer 1

The answer is, 2.5

Explanation:

Multiply each pairs:

25%*10=250

Since Adding sugar mean that its concentration is 100%.

100%*x=100x

All of that equals to 40(10+x)

so, the equation is,

250+100x=400+40x

Do the equation and you are left with 2.5 as an answer.