To find any percentage of something, just multiply the whole value by the percentage of whatever you're trying to find the value of. 17% converted to a decimal is 0.17. 400*0.17 = 68. Jonathan has 68 blue marbles in his collection. Hope that helped you!
Home Water Works says that in most homes, showers are the third-largest user of water after toilets and clothes washers. The average American shower water usage is 17.2 gallons with the average shower length being 8.2 minutes. The average flow rate is 2.1 gallons per minute.
