Question

Im gonna probably make a lot of posts for helpnsince im doing a couple assignments at a time.... so anyone able to help with this one?

Answer 1

5 liters

Explanation:

You want the number of liters of water to add to 15 liters of 40% sugar syrup to make it be 30% sugar syrup.

Setup

Let w represent the liters of water to add. Then the amount of sugar in the solution is ...

0.40(15) + 0(w) = 0.30(15 +w)

Solution

Subtracting 0.30(15) gives ...

0.10(15) = 0.30w

15/3 = 5 = w . . . . . . divide by 0.30

5 liters of water must be added.

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