Question 402876
"40 percent of "Y" is 15" means that {{{0.4y = 15}}}. Simply divide both sides by 0.4 to get {{{y=15/0.4=37.5}}}. So {{{y=37.5}}}



This then means that 20% of 2y is {{{0.2(2y)=0.4y=0.4(37.5)=15}}}



Note: you can skip the first step if you can see that 0.2(2y)=0.4y