Thirty pounds of a salt-water solution contains fifteen percent salt. how much salt is in the water? 1.5 lb 3 lb 4.5 lb

You need to find 15 percent of 30 lb.
To find a percent of a number, multiply the percent by the number.
First, divide the percent by 100, or move the decimal point of the percent to places to the left.

15% of 30 lb =
= 15% * 30 lb
= 0.15 * 30 lb
= 4.5 lb