Question 210105
Note: 40% in decimal form is {{{40/100=0.4}}}


Since "A is 40% of B", this means that {{{A=0.4B}}}



{{{A=0.4B}}} Start with the given equation.



{{{A/0.4=B}}} Divide both sides by 0.4 to isolate B



{{{(1/0.4)A=B}}} Rearrange the terms.



{{{2.5A=B}}} Divide



Since {{{2.5=250/100}}}, this means that B is 250% of A.