How much water should we add to 20 kg of seawater to change its concentration from 3% to 2%?

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

51-50

step-by-step explanation:

what is the original number? you forgot to add it.